Step 1: Prepare the Browned Butter

1. In a saucepan over medium heat, melt the butter.
2. Stir frequently until the butter turns golden brown and emits a nutty aroma (about 4–5 minutes).
3. Remove from heat and let cool slightly.

Step 2: Mix the Batter

1. Preheat oven to 350°F (175°C) and line an 8×8-inch baking pan with parchment paper.
2. In a large bowl, whisk together browned butter, granulated sugar, and brown sugar until well combined.
3. Add eggs one at a time, whisking thoroughly after each addition.
4. Stir in vanilla extract.

Step 3: Combine Dry Ingredients

1. In a separate bowl, sift together flour, cocoa powder, salt, and baking powder.
2. Gradually add dry ingredients to the wet mixture, stirring until just combined.
3. Fold in chocolate chips and 3/4 cup of M&M’s.

Step 4: Bake the Brownies

1. Pour batter into prepared baking pan and spread evenly.
2. Sprinkle extra M&M’s on top.
3. Bake for 30–35 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.

Step 5: Cool and Serve

1. Let brownies cool completely before slicing into squares.
2. Serve and enjoy!