Crumble Ingredients:
- 1/2 cup unsalted butter, cut into small pieces
- 2/3 cup all-purpose flour
- 2/3 cup rolled oats
- 3/4 cup packed brown sugar
- 1/2 tsp ground cinnamon
- 1/2 tsp ground nutmeg
- 1/4 tsp salt
Cake Ingredients:
- 2 1/2 cups all-purpose flour
- 1 1/2 tsp cinnamon
- 1 tsp salt
- 1 tsp baking powder
- 1/2 tsp baking soda
- 1 cup melted butter
- 3/4 cup packed brown sugar
- 2 eggs
- 2 tsp vanilla extract
- 3/4 cup milk
- 1 tbsp vinegar
- 2 medium-large apples, peeled and chopped
Instructions:
- Preheat oven to 350 degrees F.
- In a medium bowl, combine the crumble ingredients. Mix until combined, then set aside.
- Combine the milk and vinegar and set aside.
- In a new bowl, combine melted butter and brown sugar using a spatula. Mix until completely combined.
- Add eggs and vanilla and mix. Then, add the milk.
- In another bowl, combine all-purpose flour, cinnamon, salt, baking powder, and baking soda. Mix well, then add the chopped apples. Give it a quick mix to ensure the apples have a light coating of the dry mixture.
- Fold the dry mixture into the wet, making sure not to overmix. The batter should look lumpy with minimal streaks of flour. Transfer to an 8×8 baking dish lined with parchment paper, then evenly sprinkle the crumb mixture on top.
- Transfer to the oven to bake for 55-65 minutes.