Fresh Gingerbread Dump Cake

Ingredients

• 3/4 cup butter, melted
• 1 1/4 cups dark brown sugar, packed
• 1 cup sugar
• 2 tablespoons vanilla
• 3 large eggs
• 1 1/2 teaspoons ground ginger
• 1 tablespoon fresh ginger, grated & packed & rounded
• 1 1/2 teaspoons baking soda
• 1 1/2 cups buttermilk
• 6 tablespoons cornstarch
• 1 3/4 cups flour
• 1 cup whole wheat flour