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Keto French Fancy Recipe
Lang's Chocolates offers a sampling of decadent and luxurious hand-crafted chocolate treats.

Posted by William Lang on Aug 08 2025
Keto French Fancies with Keystone Pantry Allulose
Low-carb, sugar-free version of the beloved British teatime cake.
French Fancies are known for their soft sponge, sweet filling, and smooth pastel fondant coating — a charming, elegant treat. The classic version is loaded with sugar and refined flour, which means lots of carbs and a blood sugar spike. This keto-friendly version uses Keystone Pantry Allulose as the sweetener and low-carb flours to give you the same indulgence without the carb crash.
Ingredient Breakdown & Keto Benefits
For the Sponge
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Almond Flour (1 cup) – This naturally gluten-free flour is made from finely ground almonds. It’s rich in healthy fats, low in carbs, and gives a tender crumb. It also adds a slight nutty flavor that works beautifully in keto baking.
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Coconut Flour (¼ cup) – A powerful absorber of moisture, coconut flour helps balance the density of almond flour, keeping the sponge light. It’s high in fiber and very low in carbs.
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Baking Powder (1 tsp) – The leavening agent that makes your sponge rise and stay fluffy.
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Salt (½ tsp) – Enhances sweetness and balances flavors.
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Unsalted Butter (½ cup) – Provides richness, moisture, and that melt-in-the-mouth feel. Butter is naturally carb-free and a great keto fat source.
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Keystone Pantry Allulose (½ cup) – Our star sweetener! Allulose tastes and bakes like sugar but doesn’t raise blood sugar or insulin levels, making it ideal for keto desserts. It also helps keep cakes moist.
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Eggs (4 large) – Eggs are keto-friendly, low in carbs, and provide structure and lift to the sponge.
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Vanilla Extract (2 tsp) – Adds depth of flavor and that classic cake aroma.
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Unsweetened Almond Milk (¼ cup) – Keeps the batter smooth and adds just enough moisture without adding sugar.
For the Buttercream Filling
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Unsalted Butter (½ cup) – The base of the filling, creamy and rich.
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Powdered Keystone Pantry Allulose (½ cup) – Powdered sweetener ensures a smooth, silky texture without grittiness.
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Vanilla Extract (1 tsp) – For flavor depth.
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Salt (pinch) – Brings out the sweetness and rounds out the flavor.
For the Fondant-Style Icing
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Powdered Keystone Pantry Allulose (1 cup) – Forms the smooth, glossy coating while staying sugar-free.
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Unsweetened Almond Milk (2–3 tbsp) – Thins the icing to a pourable consistency.
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Vanilla Extract or Flavoring (1 tsp) – Choose classic vanilla, almond, or even lemon for variety.
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Natural Food Coloring – Use plant-based tints for pastel pink, soft yellow, and a chocolate shade (using cocoa powder).
Step-by-Step Instructions
Step 1: Make the Sponge
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Preheat & Prepare – Set oven to 350°F (175°C). Grease and line an 8×8-inch square baking pan with parchment paper for easy removal.
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Mix Dry Ingredients – In one bowl, whisk together almond flour, coconut flour, baking powder, and salt. This prevents clumps and ensures even distribution.
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Cream Butter & Sweetener – In another bowl, beat butter and Keystone Pantry Allulose until light and fluffy. This incorporates air into the batter, helping the sponge rise.
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Add Eggs & Vanilla – Beat in eggs one at a time, then stir in vanilla extract.
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Combine Wet & Dry – Add half the dry mix, then almond milk, then the rest of the dry mix. Stir until just combined — overmixing can make the cake dense.
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Bake – Spread the batter evenly in the pan and bake 20–25 minutes until golden and springy. A toothpick should come out clean. Cool completely before cutting.
Step 2: Make the Buttercream
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Beat butter until fluffy.
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Add powdered allulose, vanilla, and salt, then beat until smooth and light.
Step 3: Assemble the Fancies
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Trim edges of the cooled cake for a neat look.
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Cut into 1½-inch squares.
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Slice each square in half horizontally. Spread a thin layer of buttercream in the middle, then sandwich back together.
Step 4: Coat with Fondant
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Mix powdered allulose with almond milk and vanilla until smooth and thick yet pourable.
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Divide into three bowls. Tint one pink, one yellow, and one chocolate (with cocoa powder).
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Place cakes on a wire rack with parchment underneath.
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Spoon or pour fondant over each cake, letting it run down the sides for full coverage.
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Add a tiny swirl of buttercream on top for the classic look.
Step 5: Let Set & Serve
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Allow the icing to set for at least 30 minutes at room temperature before serving.
Tips for Success
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Chill Before Icing – Briefly chilling the assembled cakes makes them easier to coat with fondant.
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Powder Your Allulose – If you don’t have powdered allulose on hand, pulse regular allulose in a blender until fine.
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Keep Portions Small – These are rich little treats; small sizes make them perfect for afternoon tea.
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Don’t Rush the Cooling – A warm sponge will melt buttercream and cause the fondant to slide off.
Storage & Serving
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Room Temperature – Store in an airtight container for up to 2 days.
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Refrigerator – Keeps well for up to 5 days; allow to come to room temp before serving for the best texture.
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Freezer – Freeze un-iced sponge squares for up to 2 months. Thaw completely before filling and icing.
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Serving Suggestion – Pair with unsweetened tea or coffee to balance the sweetness and showcase the buttery sponge.
Nutrition (Per Fancy – approx. 16 per batch)
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Calories: ~110
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Net Carbs: ~2g
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Fat: ~9g
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Protein: ~3g