Best Homemade Rocky Road Brownies

Instructions

1. 1
   Preheat oven to 350°F (175°C). Line an 8x8-inch pan with parchment, leaving overhang.
2. 2
   In a microwave-safe bowl, melt butter and 1/2 cup chocolate chips in 20-second bursts, stirring between each until smooth. Let cool slightly.
3. 3
   Whisk in sugar, then eggs one at a time, and vanilla until combined and glossy.
4. 4
   Sift in flour, cocoa powder, salt, and baking powder. Fold gently with a spatula just until combined.
5. 5
   Fold in half of the remaining chocolate chips and half the nuts.
6. 6
   Pour batter into pan, smooth top. Bake 22-25 minutes until just set.
7. 7
   Scatter marshmallows, remaining chips, and nuts evenly on top. Bake 5-7 more minutes until marshmallows are puffed and golden.
8. 8
   Cool completely before lifting out and cutting into squares.