Alfajores (Latin American Sandwich Cookies)

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Introduction

Alfajores are delicate, buttery sandwich cookies held together with dulce de leche—a Latin American staple that balances crisp edges with a tender crumb. The combination of cornstarch and flour creates cookies that are light without being fragile, and the lemon-vanilla flavor keeps them from tasting one-dimensional. These work equally well as an afternoon treat or a make-ahead dessert for guests.

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 swap: Replace lemon rind with orange or lime rind for a different bright note without changing texture or baking time.

Dulce de leche alternative: Use sweetened condensed milk caramel or a thick fruit jam if dulce de leche is unavailable, though the cookies will have a tangier flavor.

Cornstarch reduction: Substitute ¼ cup of the cornstarch with additional flour if you prefer a slightly firmer, less delicate cookie.

Spiced version: Add ¼ tsp ground cinnamon and ⅛ tsp ground cloves to the dry ingredients for warm spice notes that complement the lemon.

Larger cookies: Use a tablespoon instead of a small spoon to drop batter; increase baking time to 18–20 minutes and sandwich with less filling.

Tips for Success

Work quickly after baking: Remove cookies from the baking sheet immediately after they come out of the oven while they’re still warm and pliable. Once cooled on the sheet, they’ll firm up and be harder to transfer without breaking.

Cream the butter and sugar thoroughly: Spend 2–3 minutes beating until the mixture is pale and fluffy; this incorporates air that makes the cookies tender rather than dense.

Use small, even spoonfuls: Uniform cookie size ensures they bake at the same rate. A small cookie scoop or measuring teaspoon works better than free-pouring.

Apply dulce de leche while cookies are still slightly warm: Warm cookies accept the filling more easily and help it set into a cohesive sandwich. Don’t overfill or the cookies will slip apart.

Chill before serving: Refrigerate assembled alfajores for at least 30 minutes so the dulce de leche firms up and the sandwich becomes stable enough to handle without the filling squishing out.

Storage and Reheating

Reheating is not necessary; serve at room temperature or chill them. If you prefer them slightly softer, leave assembled cookies out for 15 minutes before serving.

FAQ

Can I make the cookies ahead and fill them later?

Yes. Bake and cool the unfilled cookies, then store them in an airtight container at room temperature for up to 2 days. Fill them no more than 4 hours before serving so they stay crisp.

Why did my cookies spread too much during baking?

The butter or kitchen was too warm, or the batter was too soft. Ensure your butter is at cool room temperature (not melted or overly soft) and chill the batter for 20 minutes before baking if your kitchen is warm.

Can I use a different filling?

Yes—sweetened condensed milk caramel, thick fruit jam, or chocolate ganache all work well. Adjust the amount based on thickness; thicker fillings require less to prevent the sandwich from falling apart.

What if I don’t have cornstarch?

Use 1¾ cups flour total instead. The cookies will be slightly less delicate and more cake-like, but still taste good; baking time remains the same.