Simple and easy Frosted Chocolate Zucchini Sheet Cake and Brownie Recipe. The best homemade chocolate cake with shredded zucchini.
In a large mixing bowl combine flour, cocoa, baking soda, and salt.
In a separate bowl combine shredded zucchini, sugar, and vegetable oil. Add to dry ingredients, stirring by hand. Stir in vanilla.
Pour batter into a greased 9x13 inch pan and bake at 350°F for 30-40 minutes or until a toothpick inserted into the center comes out clean.
Cool pan on baking rack for 30 minutes.
Melt butter in a small saucepan over medium-high heat. Add in sugar and milk. Bring to a boil, stirring often.
Reduce heat to medium and continue to cook for 1 minute stirring often.
Remove from heat; stir in chocolate chips and marshmallows until completely melted. Stir in vanilla.
Let cool, stirring occasionally, until frosting thickens slightly.
Pour over cake and spread until smooth.
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