1 (18.25 ounce) box yellow cake mix
1 small box vanilla instant pudding
3/4 cup vegetable oil
3/4 cup water
4 eggs
1 tablespoon butter extract
1 tablespoon vanilla extract

Preheat oven to 350 degrees F. Butter a 9 x 13-inch baking pan.

Beat cake mix, pudding, water, eggs, and oil for 8 minutes at medium speed. Add butter extract and vanilla extract. Pour 1/2 of mixture into prepared pan.

Mix 1/2 cup sugar and 2 tablespoons cinnamon. Sprinkle 1/2 mixture over batter in pan. Spread remaining batter and remaining sugar mixture on top. Swirl knife through. Bake for 30 to 35 minutes. Drizzle with the following:

1 cup confectioners' sugar
1 tablespoon hot milk
1/2 teaspoon butter extract
1/4 teaspoon vanilla extract