Fudgy brownie bites with an oat crumble on top. This is what happens when dessert and high calorie oat snacking combine forces.
Preheat your oven to 350°F. Grease an 8x8 inch baking pan or line with parchment.
Melt the unsalted butter in a saucepan over low heat, then stir in the bittersweet chocolate chips until fully combined and glossy. Set aside to cool slightly.
In a medium bowl, whisk together all-purpose flour, unsweetened cocoa powder, rolled oats, baking powder, and salt for even distribution.
In a separate bowl, beat eggs and brown sugar until light and creamy, then add vanilla extract. Carefully fold in the cooled butter-chocolate mixture to avoid cooking the eggs.
Combine dry ingredients with the wet mixture, stirring just until flour streaks disappear. Pour batter into the prepared pan and spread evenly.
Sprinkle the rolled oats and a touch of brown sugar over the top for the crumble. Gently press oats into batter so they adhere.
Bake for 23–27 minutes. Check readiness with a toothpick—moist crumbs are ideal. Do not overbake to keep the brownie bites fudgy.
Let cool in the pan for 10 minutes. Cut into bite-sized squares once cooled for a clean edge and perfect texture.