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Brussels Cookies Recipe

4.8 from 148 reviews

These Brussels Cookies are delicate and buttery oat-flour cookies paired with a luscious semisweet chocolate filling. Soft and slightly chewy with a subtle golden edge, these cookies are made with a blend of all-purpose and oat flour, enhanced with a rich chocolate center. Perfectly baked to a light crisp and assembled carefully, they deliver a delightful sweet treat that hardens as they cool, with a satisfying smooth chocolate bite in every sandwich-style cookie.

Ingredients

Scale

Cookies

  • 2/3 cup all-purpose flour
  • 1/2 cup oat flour (or finely ground rolled oats)
  • 1/2 cup white sugar
  • 1/4 tsp baking powder
  • 7 Tbsp butter, melted
  • 2 Tbsp light corn syrup
  • 2 Tbsp heavy whipping cream
  • 1 tsp vanilla extract

Filling

  • 12 oz semisweet chocolate chips (or dark chocolate chips)

Instructions

  1. Preheat Oven: Preheat your oven to 375°F (190°C). Line a baking sheet with a silicone mat to ensure proper cookie spreading and prevent sticking.
  2. Mix Dry Ingredients: In a large bowl, whisk together all-purpose flour, oat flour, white sugar, and baking powder until well combined.
  3. Combine Wet Ingredients: Add the melted butter, light corn syrup, heavy whipping cream, and vanilla extract to the dry mixture. Stir well until a soft, smooth dough forms.
  4. Form Cookies: Using a teaspoon as a measuring tool, roll small balls of dough and place them spaced a couple of inches apart on the silicone-lined baking sheet.
  5. Bake: Bake the cookies for about 6 minutes, or until they are flat, bubbling, and just beginning to turn golden around the edges. This short baking time keeps the cookies soft and delicate.
  6. Cool Carefully: Let the cookies cool on the baking sheet for about 5 minutes. Then use a very thin spatula to carefully transfer them to a cooling rack. The cookies are fragile at this stage but will harden as they cool completely.
  7. Pair Cookies: Once fully cooled, flip the cookies over and match them into pairs based on size and shape. Lay them out on waxed paper for filling preparation.
  8. Melt Chocolate Filling: Place the semisweet chocolate chips into a glass measuring cup and microwave in short bursts, stirring frequently, until fully melted and smooth.
  9. Assemble Cookies: Spread a small amount of melted chocolate onto the bottom side of one cookie from each pair using a small spoon and spreading knife. Be gentle while spreading as the cookies can easily shatter.
  10. Finish and Chill: Top each chocolate-spread cookie with its matching partner to create sandwich cookies. Allow the chocolate filling to harden at room temperature or place the assembled cookies in the refrigerator for a firmer texture. Enjoy chilled or at room temperature.

Notes

  • Use a silicone baking mat to prevent cookies from sticking and help them spread properly.
  • Be gentle when transferring and assembling the cookies because they are soft and delicate when warm.
  • You can substitute dark chocolate chips for a richer chocolate flavor.
  • Chilling the filled cookies helps the chocolate set firmly and improves the texture of the sandwich cookies.
  • If you don’t have oat flour, grind rolled oats finely in a mini processor to make a substitute.

Keywords: Brussels Cookies, oat flour cookies, chocolate filled cookies, sandwich cookies, delicate desserts, easy baking recipe