Ingredients
For the Cake:
- 1½ cups all-purpose flour (King Arthur brand recommended for best results)
- 1 tsp baking soda
- ½ tsp salt
- ½ cup unsalted butter, softened
- ¾ cup brown sugar, packed
- 1 large egg (or flax egg: 1 tbsp ground flax + 3 tbsp water)
- ½ cup unsweetened applesauce (Canned or fresh-smashed)
- ½ cup plain Greek yogurt (or sour cream)
- 1 tsp vanilla extract
For the Crumb Topping:
- ½ cup brown sugar, packed
- ¼ cup all-purpose flour
- ½ tsp cinnamon
- ¼ tsp nutmeg (optional)
- 4 tbsp cold unsalted butter, cubed
Instructions
1. Prep Your Oven and Pan
- Preheat oven to 350°F (175°C). Grease a 9-inch round or square baking pan. Line with parchment paper for easy removal.
2. Make the Cake Batter
- In a medium bowl, whisk together flour, baking soda, and salt. Set aside.
- In a large bowl, beat butter and brown sugar until fluffy (about 2 minutes).
- Add egg (or flax egg) and vanilla, beating until smooth.
- Mix in applesauce until combined.
- Gradually add dry ingredients to wet, alternating with Greek yogurt. Stir just until no flour pockets remain.
3. Assemble the Cake
- Pour batter into prepared pan, spreading evenly.
4. Prepare the Crumb Topping
- In a small bowl, combine brown sugar, flour, cinnamon, and nutmeg.
- Cut in cold butter using a pastry cutter or fingers until mixture resembles coarse crumbs.
5. Bake to Perfection
- Sprinkle crumb topping evenly over batter.
- Bake for 30–35 minutes, or until a toothpick inserted comes out clean. Edges should be golden; center will still look slightly underbaked but will finish as it cools.
6. Cool and Serve
- Let cake cool in pan for 10 minutes, then transfer to a wire rack.
- Serve warm or at room temperature. Pair with ice cream or whipped cream!
Notes
- Applesauce Tip: Use unsweetened applesauce for less sugar. Canned works fine—just drain excess liquid.
- Storage: Keep tightly wrapped at room temp for 3 days or refrigerate for 5 days. Reheat slices in the microwave for 10 seconds for best texture.
- Freezer: Freeze unfrosted cake slices wrapped in foil for up to 3 months. Thaw overnight.
- Gluten-Free: Swap all-purpose flour for 1:1 gluten-free flour blend.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian