Zucchini Brownies on BakeSpace.com

Ingredients

• 2 c flour
• 1/3 c baking cocoa
• 1 1/2 tsp soda
• 1 tsp salt
• 2 c shredded zucchini
• 1 1/2 c sugar
• 3/4 c veg. oil
• 2 tsp vanilla
• 1/2 c chopped walnuts (opt)
• frosting:
• 1/4 c butter
• 1/2 c. semi sweet chocolate chips
• 1 c sugar
• 1/4 c milk
• 1/2 c mini marshmallows
• 1 tbsp vanilla