outrageously buttery crumb cake

Ingredients

• Servings: 1
• 1 (18.25 ounce) package yellow cake mix
• 2/3 cup water
• 3 eggs
• 1/2 cup butter, softened
• 1 1/3 cups packed brown sugar
• 1 tablespoon ground cinnamon, or to taste
• 1 tablespoon vanilla extract
• 1 1/2 cups butter
• 4 1/2 cups all-purpose flour
• 1 tablespoon confectioners' sugar for dusting (optional)

Recipe

Preparation Time: 15 mins Cook Time: 30 mins Ready Time: 1 hr 45 mins


• preheat oven to 350 degrees f (175 degrees c). grease a 12x18-inch jellyroll pan.
• beat the yellow cake mix, water, eggs, and 1/2 cup softened butter together with an electric mixer in a mixing bowl until thoroughly blended, about 2 minutes on medium speed. pour the cake batter into the prepared jellyroll pan.
• bake in the preheated oven until the edges of the cake are light brown but the middle of the cake is still slightly gooey, 15 to 17 minutes.
• while the cake is baking, mix together the brown sugar, cinnamon, vanilla extract, butter, and flour together in a large bowl until the mixture forms medium crumbs. remove the cake from the oven, and press about 3/4 of the crumb topping the top of the almost-baked cake. reserve the remaining topping.
• return the cake to the oven, and bake an additional 10 to 12 minutes, until the crumb topping is firm and the cake is cooked all the way through.
• remove the cake from the oven, and sprinkle with the remaining crumb topping. let the cake cool to room temperature, and sprinkle with confectioners' sugar.