My Favorite Crumb Cake Ingredients 2 Tablespoons canola oil 4 cups flour ½ cup sugar 2½ teaspoons baking powder ½ teaspoon salt 1 egg ½ cup milk 2 teaspoons vanilla 1 cup packed brown sugar 1½ teaspoons cinnamon 2 sticks butter, melted and cooled handful of mini chocolate chips Instructions Whisk together 1½ cups flour,