Ingredients for - Apple Streusel Coffee Cake

1. Packed brown sugar ⅔ cup
2. All-purpose flour ½ cup
3. Ground cinnamon 1 teaspoon
4. Cold butter 6 tablespoons
5. Chopped walnuts 1 cup
6. Apple - peeled, cored, and chopped 1
7. All-purpose flour 2 cups
8. Baking powder 1 tablespoon
9. Salt 1 teaspoon
10. White sugar 1 cup
11. Butter, softened ⅓ cup
12. Milk 1 cup
13. Egg 1 large
14. Vanilla extract 1 teaspoon

How to cook deliciously - Apple Streusel Coffee Cake

1 . Stage

Preheat the oven to 350 degrees F (175 degrees C). Grease a 9x13-inch pan.

2 . Stage

Mix brown sugar, flour, and cinnamon for topping in a bowl. Cut in cold butter. Stir in walnuts and apple.

3 . Stage

Combine flour, baking powder, and salt for cake in a bowl. Beat white sugar and butter together in a large bowl with an electric mixer until creamy. Add dry ingredients. Mix in milk, egg, and vanilla extract. Spread into the prepared pan and sprinkle streusel topping over top. Swirl a knife through both mixtures.

4 . Stage

Bake in the preheated oven until a toothpick inserted into the center of the cake comes out clean, 35 to 40 minutes.