These Farm Stand Brownies are deeply rich, fudgy brownies loaded with semisweet chocolate and toasted hazelnuts. Melted chocolate and butter create an intensely smooth base, while a touch of espresso powder enhances the chocolate flavor without overpowering it. Chopped hazelnuts add a warm, nutty crunch both inside the batter and sprinkled across the top. After baking, the brownies are chilled to set their dense, decadent texture, resulting in perfectly sliceable squares with a glossy top, moist center, and satisfying nutty bite—an indulgent treat worthy of any farm stand bakery case.