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Combine cake batter ingredients. Add half of the cake batter into prepared 9x13 pan.
Combine the filling ingredients and mix them until everything is evenly incorporated.
Top cake batter in pan with half of the cinnamon filling mixture.
Top with remaining cake batter and cinnamon mixture. Use a toothpick to swirl the ingredients.
Bake for 35-40 minutes in a 350 degree oven. Top with glaze as soon as you remove it from oven.