Ingredients

2 tbsp. butter

1 3/4 c. semisweet chocolate chips

1 c. sugar

1 egg plus 1 egg yolk

1 tsp. vanilla extract

1 c. grated zucchini (from 1 medium zucchini)

1/2 c. all-purpose flour

1/2 tsp. baking powder

1/2 tsp. kosher salt

3 tbsp. whole milk

Preparation

Step 1Preheat oven to 350 degrees F. In a small saucepan over low heat, melt butter and 1 cup chocolate chips.Step 2Remove saucepan from heat and stir in sugar, egg and egg yolk, and vanilla. Fold in grated zucchini.Step 3In a bowl, whisk together flour, baking powder, and salt. Add wet ingredients to dry and stir until totally combined. Pour mixture into a parchment-lined or greased 8-x-8" baking dish or pan.Step 4 Bake until moist crumbs cling to toothpick, about 25 minutes. Let cool 1 hour.Step 5Make frosting: In a small saucepan over low heat, heat milk just until it bubbles. Add remaining 3/4 cup chocolate chips to a bowl and pour over milk. Let sit 5 minutes, then whisk until completely melted and no chocolate chunks remain. (Microwave on low for 30 seconds if chunks do remain.) Pour ganache over brownies and spread with a spatula to create an even layer. Step 6Refrigerate until firm, about 30 minutes. Slice into brownies and serve.