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Crumbly Sour Cream Apple Squares

These crumbly sour cream apple squares blend sweet and tart flavors with a cozy, old-fashioned feel, making them perfect for any occasion.
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Prep Time 20 minutes
Cook Time 40 minutes
Total Time 1 hour
Servings: 15 servings
Course: Dessert, Snack
Cuisine: American
Calories: 300
Ingredients Method Notes

Ingredients
  

For the crust and topping
  • 2 cups all-purpose flour
  • 2 cups packed brown sugar
  • 1/2 cup butter, softened
  • 1 cup chopped walnuts Can substitute with pecans if desired
For the apple layer
  • 2 teaspoons ground cinnamon
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup sour cream Can substitute with plain Greek yogurt
  • 1 teaspoon vanilla extract
  • 1 large egg, at room temperature, beaten
  • 2 cups chopped, peeled tart apples Granny Smith or Honeycrisp are good choices
For serving
  • 1 spoonful whipped cream Optional, for topping

Method
 

Preparation
  1. Preheat the oven to 350°F (175°C) and prepare a 13×9-inch baking pan by leaving it ungreased.
  2. In a bowl, beat the flour, brown sugar, and softened butter on low speed until the mixture resembles coarse crumbs.
  3. Stir in the chopped walnuts until well incorporated.
  4. Take about 2 3/4 cups of the crumb mixture and press it firmly into the bottom of the prepared pan.
Mixing the filling
  1. To the remaining crumb mixture, add cinnamon, baking soda, salt, sour cream, vanilla, and egg; beat until smooth.
  2. Carefully fold in the chopped apples.
Baking
  1. Spread the apple batter evenly over the crust.
  2. Bake for 35 to 40 minutes, or until a toothpick inserted in the center comes out clean.
  3. Cool the pan on a wire rack before cutting into 15 squares.
Serving
  1. Serve squares plain or topped with whipped cream if desired.

Notes

Store in an airtight container in the fridge for 3 to 4 days. Can freeze for up to 2 months. For best results, separate layers with parchment paper.