Alfajores (Latin American Sandwich Cookies)

Introduction

Alfajores are delicate, buttery sandwich cookies filled with dulce de leche—a classic Latin American treat that balances crisp, crumbly edges with a soft center. The high ratio of cornstarch to flour creates their signature tender texture, while lemon rind adds brightness without overpowering the caramel filling. These bake in 15 minutes and deliver impressive results with straightforward mixing and no special equipment.

Recipe Details

• Prep Time: 15 minutes
• Cook Time: 15 minutes
• Total Time: 30 minutes
• Servings: 24 cookies (12 sandwich pairs)

Ingredients

• ½ cup (120 ml) butter
• 1 cup (240 ml) white granulated sugar
• 1 egg
• 2 egg yolks
• 1 tsp vanilla
• 2 tsp lemon rind, grated
• 1½ cup (360 ml) cornstarch
• ½ cup (120 ml) flour
• 1 tsp baking powder
• ¼ tsp salt
• Dulce de leche

Instructions

1. Cream butter; add sugar and beat until fluffy.
2. Add egg and egg yolks one at a time, beating well. Beat in vanilla and lemon rind.
3. Sift together cornstarch, flour, baking powder, and salt. Add to batter and mix well.
4. Drop batter by small spoonfuls onto well-buttered baking sheet.
5. Bake at 350°F for 15 minutes. Remove immediately and cool.
6. Sandwich the cookies together with dulce de leche.

Variations

Citrus zest swap: Replace lemon rind with orange or lime zest for a different brightness; the cookies will take on a subtle tropical note while maintaining the same texture.

Dulce de leche alternative: Use sweetened condensed milk caramel or a thick fruit jam (apricot or guava) between the cookies for a lighter or fruitier filling.

Cornstarch reduction: Drop the cornstarch to 1¼ cups and increase flour to ¾ cup if you prefer slightly crispier, less delicate cookies with less crumb.

Toasted coconut rim: After baking and while still warm, dip the edges of each cookie in dulce de leche, then roll in unsweetened shredded coconut for texture and visual appeal.

Brown butter base: Melt the butter and let it brown for 2–3 minutes before creaming with sugar to add a subtle nutty depth to the dough.

Tips for Success

Don’t skip the cooling step: Remove cookies from the baking sheet immediately after baking. They firm up as they cool on the sheet, which makes them easy to handle and prevents them from sticking together or breaking.

Watch for edges, not centers: These cookies bake quickly and can go from golden to slightly dark in 1–2 minutes. At 15 minutes, the edges should just start to color while the centers remain pale; remove them promptly.

Use room-temperature ingredients: Cold eggs and butter won’t incorporate smoothly into the batter, resulting in dense, gritty dough. Bring eggs and butter out of the fridge 30 minutes before mixing.

Fill when fully cool: Assemble the sandwiches only after the cookies have cooled completely, or the dulce de leche will melt and soak into the crumbly cookie, making them soggy.

Small spoonfuls matter: Drop batter in pieces roughly the size of a walnut—they spread slightly in the oven and bake evenly. Larger spoonfuls will have raw centers; smaller ones may overbake at the edges.

Storage and Reheating

If unfilled cookies become soft, reheat them on a baking sheet in a 300°F oven for 3–5 minutes to restore crispness, then cool before filling.

FAQ

Can I use whole eggs instead of egg yolks? Yes, but use 2 whole eggs total (instead of 1 whole egg plus 2 yolks). The cookies will be slightly less tender and a bit more cake-like, but they’ll still bake through and taste good.

What if my dulce de leche is too thick to spread? Warm it gently over low heat for 1–2 minutes, stirring constantly, until it becomes pourable. A very thick dulce de leche can also be thinned by whisking in a small spoonful of water or milk; add just enough to reach spreadable consistency.

Why did my cookies spread too much or turn out too thin? The butter was likely too warm or the batter was overworked. Use cooler butter and mix only until the dry ingredients are just combined; overmixing develops gluten, which can cause excessive spreading. Also ensure your baking sheet is level and not warped.

Can I make these ahead for a party? Yes. Bake the unfilled cookies up to 3 days ahead and store them in an airtight container. Assemble the sandwiches no more than 2 hours before serving to keep them from softening; store assembled cookies at room temperature in a single layer.