Quick Chocolate Peanut Butter Brownies

1 . Stage

Preheat oven to 350 degrees F (175 degrees C). Grease a 9x13-inch baking dish.

2 . Stage

Melt the chocolate chips, butter, and peanut butter together in the top of a double boiler over simmering water, stirring frequently and scraping down the sides with a rubber spatula to avoid scorching. Stir vanilla into chocolate mixture.

3 . Stage

Stir flour, sugar, eggs, baking soda, and salt into the chocolate mixture. Fold walnuts into batter. Pour batter into prepared baking dish.

4 . Stage

Bake brownies in the preheated oven until a toothpick inserted in the center comes out with moist chunks on it, but not wet, about 30 minutes. Cool to room temperature before cutting into squares.