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two pieces of apple streusel cake stacked on top of each other on parchment paper with a fork next to it and a baking sheet in the background
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4.94 from 49 votes

Apple Streusel Sheet Cake

Apple Streusel Sheet Cake is so easy to make from scratch and tastes amazing! A simple but so flavorful German apple cake that's topped with the most delicious cookie-like streusel.
Prep Time30 minutes
Cook Time45 minutes
Total Time1 hour 15 minutes
Course: Dessert
Cuisine: German
Servings: 16

Ingredients

  • 4 cups all-purpose flour divided
  • 1 ½ cups unsalted butter divided
  • cup granulated sugar
  • ½ teaspoon vanilla extract
  • 1 large egg
  • 5 apples
  • 1 ⅓ cup applesauce sweet or unsweetened
  • 1 teaspoon lemon zest freshly grated
  • 1 tablespoon lemon juice
  • ½ teaspoon ground cinnamon
  • ½ cup granulated or brown sugar

Instructions

  • Lightly grease a quarter-size baking sheet (9x13-inch) and preheat your oven to 350°F (180°C).
  • In the bowl of a stand mixer fitted with the paddle attachment, add 3/4 cup butter, 1/3 cup sugar, vanilla extract, 2 cups all-purpose flour, and egg. Beat until everything is incorporated. Spread the dough onto the baking sheet. Put the baking sheet in the fridge while you make the apple and crumble layer.
  • Leave the remaining 3/4 cup butter on the kitchen counter to get to room temperature.
  • Peel and core the apples and chop them into small chunks. Mix the apple chunks with the lemon zest, lemon juice, cinnamon and apple sauce. Set aside.
  • For the crumb topping: In the bowl of a stand mixer fitted with the paddle attachment mix the remaining soft butter with 2 cups of flour and 1/2 cup sugar (see Note 4). The mixture will be crumbly.
  • To assemble the cake, spread the apple mixture onto the dough layer. Then use your fingers to crumble the crumbs on top. Press some crumbs together to form bigger crumbs, you don't want the crumbs to be too fine.
  • Bake for 45 minutes until the crumbs are lightly golden.
  • Let the cake cool off completely. It will be a little bit soft while hot.
  • Serve with whipped cream or vanilla ice cream!

Video

Nutrition

Calories: 349kcal | Carbohydrates: 44g | Protein: 3g | Fat: 17g | Saturated Fat: 11g | Cholesterol: 55mg | Sodium: 157mg | Potassium: 118mg | Fiber: 2g | Sugar: 18g | Vitamin A: 585IU | Vitamin C: 3.4mg | Calcium: 16mg | Iron: 1.6mg