An easy, cinnamon-spiced apple crumb cake with a moist sour cream base and buttery streusel topping. Perfect for brunch or dessert.
Cake Base:
1½ cups all-purpose flour
1½ tsp baking powder
¼ tsp baking soda
¼ tsp salt
½ cup unsalted butter, softened
¾ cup granulated sugar
2 large eggs
1 tsp vanilla extract
½ cup sour cream (or Greek yogurt)
Apple Filling:
2 medium apples (Granny Smith or Honeycrisp), peeled and sliced
1 tbsp brown sugar
½ tsp cinnamon
1 tsp lemon juice
Crumb Topping:
¾ cup all-purpose flour
⅓ cup brown sugar
2 tbsp granulated sugar
1 tsp cinnamon
Pinch of salt
6 tbsp cold unsalted butter, cubed
Preheat oven to 350°F (175°C). Grease and line a 9-inch pan.
Make crumb topping: Mix dry ingredients, cut in butter until crumbly. Chill.
Toss apples with sugar, cinnamon, and lemon juice. Set aside.
In a bowl, whisk flour, baking powder, baking soda, and salt.
In another bowl, beat butter and sugar until fluffy. Add eggs one at a time.
Mix in vanilla and sour cream. Fold in dry ingredients gently.
Spread batter into pan. Top with apples, then crumble topping.
Bake 40–45 minutes or until a toothpick comes out clean.
Cool slightly before serving. Store covered at room temp.
Add chopped pecans for crunch.
Substitute pears or mix with apples.
Freeze leftovers for up to 2 months.