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Outrageously Buttery Crumb Cake

Outrageously Buttery Crumb Cake Recipe


A big sheet cake that starts its life as a boxed cake mix gets a topping made of tons of buttery, crumbly streusel.


  • 1 (18.25 ounce) package yellow cake mix
  • ⅔ cup water
  • 3 large eggs eggs
  • ½ cup butter, softened
  • 1 ⅓ cups packed brown sugar
  • 1 tablespoon ground cinnamon, or to taste
  • 1 tablespoon vanilla extract
  • 1 ½ cups butter
  • 4 ½ cups all-purpose flour
  • 1 tablespoon confectioners' sugar for dusting


  1. Preheat oven to 350 degrees F (175 degrees C). Grease a 12x18-inch jellyroll pan.
  2. 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.
  3. 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.
  4. 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 onto the top of the almost-baked cake. Reserve the remaining topping.
  5. 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.
  6. 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.

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Nutritional Information

Outrageously Buttery Crumb Cake

Servings Per Recipe: 16
Calories: 559.3
% Daily Value *
protein: 13 %
carbohydrates: 23 %
exchange other carbs:
dietary fiber: 6 %
fat: 43 %
saturated fat: 77 %
cholesterol: 32 %
vitamin a iu: 15 %
niacin equivalents: 31 %
vitamin b6: 4 %
vitamin c:
folate: 26 %
calcium: 8 %
iron: 14 %
magnesium: 5 %
potassium: 3 %
sodium: 16 %
thiamin: 35 %
calories from fat:
percent of calories from carbs:
percent of calories from fat:
percent of calories from protein:
percent of calories from sat fat:
*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
**Nutrient information is not available for all ingredients. Amount is based on available nutrient data.
(-)Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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