Ingredients

• unsalted butter - 1 cup
• granulated sugar - 1 cup
• brown sugar - ½ cup
• large eggs - 2
• vanilla extract - 2 teaspoons
• all-purpose flour - 1 cup
• cocoa powder - ⅓ cup
• baking powder - 1 teaspoon
• salt - ½ teaspoon
• cinnamon - 1 teaspoon
• granulated sugar (for topping) - 2 tablespoons
• cinnamon (for topping) - 1 teaspoon

Instructions

1. 1.

   Preheat the oven to 350°F (175°C) and grease a 9x9 inch baking pan.

2. 2.

   In a medium saucepan, melt the butter over low heat. Remove from heat and stir in the granulated sugar and brown sugar until well combined.

3. 3.

   Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.

4. 4.

   In a separate bowl, whisk together the flour, cocoa powder, baking powder, salt, and cinnamon.

5. 5.

   Gradually add the dry ingredients to the wet mixture, stirring until just combined.

6. 6.

   Pour the brownie batter into the prepared baking pan and spread evenly.

7. 7.

   In a small bowl, mix the granulated sugar and cinnamon for the topping. Sprinkle it evenly over the brownie batter.

8. 8.

   Bake in the preheated oven for 25-30 minutes or until a toothpick inserted in the center comes out with a few moist crumbs.

9. 9.

   Allow to cool in the pan before cutting into squares and serving.