I have frozen brownies before with no trouble. This recipe is great. Just a plain brownie but you can add anything you like. Sometimes I add m&ms or choc chips or peanut butter chips. You can also frost them with any frosting you like.. Or just eat them plain. To freeze them, bake them and cool completely. I wrap mine in plastic wrap then in foil. Or you could cut them into individual brownies and freeze them that way. Just set them at room temp for about 15-20 minutes to thaw. Hope this helps!!
Fudge Brownies:
1 cup butter, melted 1 tsp. salt
3/4 cup baking cocoa 1 1/2 cups all purpose flour
4 eggs 1 tsp. baking powder
2 cups sugar 1 tsp. vanilla extract
Stir cocoa into melted butter and set aside. Beat eggs and sugar in a large bowl. In a small bowl combine flour, salt, and baking soda. Stir flour mixture into eggs. Add vanilla extract and chocolate mixture. Spread into a greased 13x9" pan. Bake at 350 degrees for 25-28 minutes or until a toothpick inserted near center comes out almost clean. Cool in pan on wire rack.