This keto strawberry tart with pastry cream starts with something most people do not know exists: Fresas de Constanza.
Constanza is a valley in the Cordillera Central of the Dominican Republic, at 1,200 meters above sea level. The altitude makes it cold enough for temperate crops that do not grow anywhere else on the island - strawberries, apples, garlic, mushrooms, and potatoes.
The fresas from Constanza are smaller than imported strawberries, intensely red, and have a concentrated sweetness and acidity that commercial strawberries cannot replicate. They taste like what strawberries are supposed to taste like.
This tart uses those fresas on top of an allulose pastry cream sitting in an almond flour crust. No refined sugar. No flour. No compromises on flavor.
The allulose in the cream sets exactly like a traditional pastry cream with the same golden color and the same smooth texture. The almond flour crust is flaky, buttery, and holds together cleanly when sliced.
8 grams of protein per slice. 3 grams of sugar. 202 calories. The dessert that proves Dominican mountain produce is world-class.
Gaila | AFPA Certified Holistic Nutritionist | Dominican Cook
Table of Contents
Protein Score
Base protein: 8g per slice | Tier: Balanced
The egg yolks in the pastry cream contribute 4g of protein per serving. The almond flour crust adds 3g. The optional Greek yogurt swirl on top adds another 3-4g. At 202 calories and 3g of sugar, this is the dessert that fits into any nutritional strategy without requiring adjustment elsewhere.
Protein Boost Options
- Fold 2 tablespoons of Greek yogurt into the finished pastry cream before filling the tart - adds 3g protein and a subtle tang that brightens the cream
- Replace 2 tablespoons of almond flour in the crust with 2 tablespoons of unflavored collagen peptides - adds 4g collagen protein per batch invisibly
- Top each slice with a spoonful of Greek yogurt instead of or alongside the strawberries - adds 6g protein per serving
- Use cottage cheese blended smooth in place of almond milk in the pastry cream - adds 7g protein per batch and creates an even creamier texture
Why This Keto Strawberry Tart Works After 45
The almond flour crust is doing more nutritional work than a traditional flour crust. The USDA FoodData Central confirms that almond flour provides 6g of protein and 3g of fiber per quarter cup, plus vitamin E and magnesium.
The Mayo Clinic identifies magnesium as essential for muscle function, nerve signaling, and sleep quality - all of which are frequently disrupted during perimenopause.
Allulose sweetens this tart without the blood sugar impact of sugar. The American Diabetes Association confirms that allulose is absorbed but not metabolized, producing minimal impact on blood glucose.
For women managing insulin sensitivity or following a ketogenic or low-carb approach after 45, this distinction matters at every meal - including dessert.
Fresh strawberries provide vitamin C and ellagic acid - a polyphenol the National Institutes of Health has studied for its antioxidant and potential anti-inflammatory properties.
Fresas de Constanza, grown at altitude in Dominican mountain soil, have a higher concentration of these compounds than greenhouse-grown commercial strawberries because of the stress response to cool temperatures and high altitude.
3 grams of sugar. 202 calories. A tart that tastes like the Dominican mountains.
Why You'll Love This Keto Strawberry Tart with Pastry Cream Recipe
- Fresas de Constanza are the Dominican strawberry story nobody outside the island knows - smaller, more intense, more aromatic than commercial varieties. Using them connects this dessert to Dominican terroir in a way that imported fruit cannot
- Allulose sets exactly like sugar in the pastry cream - same golden color when heated, same smooth texture when cooled, same behavior in every step of the recipe. The only difference is in your body
- The almond flour crust is genuinely flaky - xanthan gum and the right fat ratio produce a crust that holds together when sliced and does not crumble apart
- 202 calories per slice with 8g protein and 3g sugar - this is the dessert you can have every week without adjusting anything else
- Works as individual tartlets (6 small) or one large tart (8 slices) - the dough handles both formats equally well
- Make-ahead friendly - the crust and pastry cream can both be made the day before. Assemble and top with strawberries just before serving
Ingredients
Keto Pie Crust
- 1 ½ cups almond flour
- 5 tablespoons coconut flour
- 2 teaspoons xanthan gum
- 1 teaspoon baking powder
- ¼ teaspoon salt
- 2 teaspoons apple cider vinegar
- 1 egg, lightly beaten
- 3 teaspoons water (or as needed)
- Egg wash (1 egg beaten with 1 teaspoon of water)
Pastry Cream Filling
- 2 cups unsweetened almond milk
- ½ vanilla bean, split and scraped
- 4 egg yolks
- ⅓ cup monk fruit or allulose
- 2 tablespoons arrowroot
- 1 cup blueberries
Why You'll Love This Recipe
This Blueberries and Pastry Cream Keto Pie offers a delightful combination of creamy, rich filling and fresh, juicy blueberries, all set in a crispy keto pie crust.
The flavors blend beautifully, creating a dessert that’s both satisfying and healthy. Perfect for those on a keto diet or anyone looking to reduce their sugar intake without sacrificing taste.
Instructions
1. Prepare the Keto Pie Crust
- Mix Dry Ingredients: Add almond flour, coconut flour, xanthan gum, baking powder, and salt to a food processor. Pulse until evenly combined.
- Add Wet Ingredients: Add in the egg and apple cider vinegar. Pulse until the dough just begins to come together. The mixture should resemble coarse breadcrumbs.
- Form Dough: Turn out the dough onto cling film (plastic wrap) and pat into a round disk. Wrap tightly and refrigerate for at least one hour. Alternatively, you can freeze the dough and thaw it as needed.
- Roll Out Dough: Roll out the crust between parchment paper. If the dough becomes unmanageable, chill it in the freezer for 5-10 minutes.
- Pre-Bake Crust: Once shaped, place the crust in the freezer for 10-15 minutes before baking to help it keep its shape. Brush with egg wash for a glossy finish (optional). Bake at 390°F (200°C) for 8-10 minutes, or until lightly browned. Let cool on a wire rack.
2. Prepare the Pastry Cream
- Heat Milk and Vanilla: In a medium pan, bring the milk and vanilla bean to a boil. Once boiling, remove from heat.
- Mix Egg Yolks and Sweetener: In a bowl, combine the egg yolks and monkfruit or allulose. Whisk until the mixture turns pale yellow. Add the arrowroot and mix until smooth.
- Temper the Eggs: Slowly pour a cup of the hot milk mixture into the egg mixture, whisking constantly to prevent the eggs from curdling. Then add the rest of the milk mixture and whisk well.
- Thicken the Cream: Return the mixture to the pan and cook over medium heat, whisking constantly until the mixture thickens (about 2 minutes). Remove from heat and let it cool. Cover with plastic film to prevent a skin from forming.
3. Assemble the Pie
- Fill the Crust: Once the pie crust and pastry cream have cooled, add some pastry cream to the bottom of each tart.
- Add strawberries: Top with fresh strawberries
- Garnish: Sprinkle with a bit of monkfruit or allulose and lemon zest if desired. Serve immediately or refrigerate until ready to serve.
Keto Strawberry Tart with Pastry Cream - Fresas de Constanza
Ingredients
KETO PIE CRUST:
- 1½ cups almond flour
- 5 tablespoon coconut flour
- 2 teaspoon xanthan gum
- 1 teaspoon baking powder
- ¼ teaspoon salt
- 2 teaspoon apple cider vinegar
- 1 egg lightly beaten
- 3 teaspoon water or as needed
- Egg wash: 1 egg beaten with 1 teaspoon water
PASTRY CREAM FILLING:
- 2 cups unsweetened almond milk
- ½ vanilla bean split and scraped
- 4 egg yolks
- ⅓ cup allulose
- 1 tablespoon arrowroot starch
- 2 cups fresh strawberries Fresas de Constanza preferred
Instructions
- Make the crust: combine almond flour, coconut flour, xanthan gum, baking powder, and salt in a food processor. Pulse to combine. Add egg and apple cider vinegar. Pulse until dough forms coarse crumbs. Add water one teaspoon at a time until dough just comes together.
- Rest the dough: turn out onto plastic wrap, shape into a disk, wrap tightly, and refrigerate at least 1 hour.
- Pre-bake: roll dough between two sheets of parchment paper. Transfer to tart pan(s). Freeze 10-15 minutes. Brush with egg wash. Bake at 390F (200C) for 8-10 minutes until lightly golden. Cool on a wire rack.
- Make the pastry cream: heat almond milk with vanilla bean in a medium pan until just boiling. Remove from heat. Whisk egg yolks and allulose until pale yellow. Add arrowroot and whisk smooth. Temper by slowly adding hot milk to egg mixture, whisking constantly. Return to pan and cook over medium heat, whisking constantly, until thickened - about 2 minutes. Cover with plastic wrap directly on the surface. Cool completely.
- Assemble: fill each cooled tart shell with pastry cream. Top generously with fresh strawberries. Dust with a pinch of allulose and lime zest if desired.
Notes
Nutrition
Nutritionist Note
As an AFPA Certified Holistic Nutritionist, this keto strawberry tart is the recipe I use to explain that sugar-free does not mean flavor-free.
Allulose produces the same caramelization, the same Maillard reaction, and the same smooth pastry cream texture as regular sugar.
The American Diabetes Association confirms that allulose has minimal impact on blood glucose, making this tart appropriate for women managing insulin resistance, following a ketogenic approach, or in bariatric maintenance.
The almond flour crust contributes vitamin E, magnesium, and fiber. The egg yolks in the pastry cream provide choline and fat-soluble vitamins. The fresh strawberries deliver vitamin C and ellagic acid. At 202 calories and 3g of sugar, this is a dessert that does not require apology or adjustment.
The Cleveland Clinic identifies consistent blood sugar management as one of the most important factors in energy, mood, and weight stability during midlife. A dessert that tastes like strawberries and pastry cream and does not spike blood sugar is not a compromise. It is the strategy working correctly.
For bariatric patients in the general diet and maintenance phases, one slice at 202 calories is an appropriate occasional treat. The almond flour crust is dense - chew slowly and eat the filling and fruit components first.
Smart Swaps
Fresh fruit variations: Fresas de Constanza are the Dominican choice. Outside the Dominican Republic, use the best local strawberries you can find - small, intensely flavored varieties always work better than large commercial ones. Raspberries, blueberries, or sliced mango also work beautifully on this pastry cream base.
Higher protein: replace 2 tablespoons of almond milk in the pastry cream with 2 tablespoons of Greek yogurt blended smooth. Adds 3g protein and a subtle tang.
Dairy-free: replace butter in the crust with cold coconut oil. Replace almond milk with full-fat coconut milk in the pastry cream. The coconut milk version sets slightly richer and is completely dairy-free.
Individual tartlets: divide the dough into 6 equal portions and press into individual 4-inch tart molds. Pre-bake 6-8 minutes. Perfect for portion control and presentation.
Bariatric: eat filling and fruit only, skip the crust in earlier phases. One quarter of a slice of the pastry cream and strawberries is appropriate from the general diet phase onward.
Frequently Asked Questions
What are Fresas de Constanza? Fresas de Constanza are strawberries grown in the Constanza valley of the Dominican Republic, at approximately 1,200 meters above sea level in the Cordillera Central mountains. The altitude creates cool temperatures that allow temperate fruits to thrive in a tropical country. The fresas are smaller and more intensely flavored than commercial greenhouse strawberries - sweeter, more aromatic, and with a higher concentration of antioxidants from the mountain growing conditions.
Does allulose work the same as sugar in pastry cream? Yes. Allulose caramelizes, thickens, and sets identically to regular sugar in pastry cream. The golden color when heated, the smooth, glossy texture when cooled, and the way it sets under plastic wrap are all the same. The only difference is metabolic - allulose is absorbed but not metabolized, so it does not raise blood glucose.
Can I make this ahead? Yes. Make the crust and pastry cream up to 24 hours ahead. Store the crust at room temperature and the pastry cream covered in the refrigerator. Assemble and top with strawberries within 2 hours of serving for the best texture and appearance.
Is this keto strawberry tart bariatric-friendly? For the general diet and maintenance phases, one slice is appropriate. The almond flour crust is dense - eat slowly and chew thoroughly. For earlier phases, eat only the pastry cream and strawberry topping, skipping the crust.
Try these next:
- High-Protein Arroz con Leche - 21g Protein, The Dominican Comfort Dessert Rebuilt
- Low-Carb Dominican Pastelón - Easy Cauliflower Casserole with 29g Protein
- Pollo Asado Dominicano with Avocado Salsa
- Delicious Low-carb chicken nuggets
- Hard-Boiled Eggs Guisados en Escabeche
Con Fuerza y Sazón,
Gaila
AFPA Certified Nutritionist, Dominican Cook, Bariatric Patient
Did you make this recipe? I want to see your plate! Tag @strengthandsazon and use #StrengthAndSazon so I can share your creation with our whole community 🇩🇴
If you love this kind of cooking, the 5 High-Protein Dominican Bowls guide takes the same approach to five classic dishes.
Let's stay connected:
