Ingredients
1 cup light brown sugar
1 1/4 cup all-purpose flour
1/2 tsp. salt
3 tsp. cinnamon
1 1/2 sticks butter (chilled)
1 box yellow cake mix (plus ingredients listed on box)
2 tsp. vanilla
1 tsp. cinnamon
Directions
- 1
Preheat the oven to 350 degrees F. Butter a 9x13-inch baking dish.
- 2
In a small bowl, combine the topping ingredients, except the butter. Cut the butter into the mixture with a fork, pastry cutter or your hands until the mixture is crumbly.
- 3
In a medium bowl, beat together the cake mix, ingredients listed on the box, vanilla and cinnamon until smooth.
- 4
Pour half the batter into the prepared baking dish. Sprinkle half of the topping mixture on top.
- 5
Evenly pour over the remaining cake batter on top. Use a spatula to carefully spread the mixture, if needed.
- 6
Bake for 15 minutes. Remove the cake from the oven and top with the remaining topping mixture.
- 7
Bake for 15 minutes, or until the cake is set and the top browns slightly.
- 8
Serve warm or at room temperature.