Brownies Points for the marshmallows

Preheat oven to 350 degrees F. Grease bottom and sides of 9-inch square pan or a glass Pyrex with butter. In a saucepan, melt baking chocolate, chocolate chips and butter over low heat, stirring frequently; remove from heat. Cool slightly and set aside. In large bowl, beat sugar, vanilla and eggs at medium speed. On low speed, beat in the chocolate mixture. Slowly beat in flour just until all ingredients are blended together. Bake for 20 minutes and then sprinkle marshmallows on top. Continue baking for 20 more minutes or till toothpick is clean. Cool completely, about 1 hour before cutting!