S’mores Brownies

Name: S’mores Brownies
Prep time: 15 min
Cook time: 40 min
Total time: 3 h
Yield: 16
Ingredients: Ingredients; 1 cup unsalted butter; 8 oz dark chocolate, chopped (or 1⅓ cups chocolate chips); 1¼ cups granulated sugar; 4 large eggs; 1 teaspoon vanilla extract; 1 cup all-purpose flour; ¼ cup unsweetened cocoa powder; ½ teaspoon salt; 1½ cups graham cracker pieces (about 12 crackers, broken into chunks); 2 cups mini marshmallows; 4 oz milk chocolate, chopped into chunks; 3 full-size graham crackers, broken into larger pieces for topping