Use more sugar: Sugar contributes to the texture of brownies, and using more sugar can make them chewier. Try increasing the amount of granulated sugar or adding brown sugar to the recipe. Use bread flour: Bread flour has a higher protein content than all-purpose flour, which can contribute to a chewier texture. Try using bread flour in place of all-purpose flour in your brownie recipe. Don't overmix the batter: Overmixing the batter can cause the gluten in the flour to develop, which can lead to a cakey texture. Be sure to mix the batter just until the ingredients are combined. Underbake slightly: Removing the brownies from the oven a few minutes early can result in a chewier texture. Take them out when the edges are set but the center is still slightly jiggly.