This apple cinnamon snack cake is simple enough for an afternoon treat but special enough to share. Greek yogurt keeps the crumb tender, small apple pieces stay juicy, and a cinnamon-sugar sprinkle forms a delicate crackly top.

Prep: 15 minutes Cook: 35 minutes Total: 50 minutes Serves: 9 servings
Why you’ll love this recipe
Melted butter means no mixer is needed, and yogurt supplies enough moisture for a soft crumb. Dicing the apples small distributes fruit through every square without weighing down the batter.
Ingredients
- 1½ cups all-purpose flour
- 1 teaspoon baking powder
- ½ teaspoon baking soda
- 1½ teaspoons ground cinnamon
- ¼ teaspoon ground nutmeg
- ½ teaspoon kosher salt
- ½ cup unsalted butter, melted and cooled slightly
- ⅔ cup packed light brown sugar
- 2 large eggs, at room temperature
- ½ cup plain Greek yogurt
- 1 teaspoon vanilla extract
- 1½ cups peeled apples cut into ¼-inch dice
- Topping: 1 tablespoon granulated sugar mixed with ½ teaspoon cinnamon
Instructions
- Heat the oven to 350°F. Line an 8-inch square pan with parchment paper, leaving an overhang on two sides, and lightly grease it.
- In a medium bowl, whisk the flour, baking powder, baking soda, cinnamon, nutmeg, and salt.
- In a large bowl, whisk the melted butter and brown sugar until smooth. Whisk in the eggs, yogurt, and vanilla.
- Fold the dry ingredients into the wet mixture just until a few flour streaks remain. Fold in the diced apples; do not overmix.
- Spread the batter evenly in the pan and sprinkle with the cinnamon sugar.
- Bake for 32 to 38 minutes, until the top springs back lightly and a toothpick inserted near the center comes out with a few moist crumbs. Cool completely before slicing into 9 squares.
Success tips and variations
- Choose a crisp apple such as Honeycrisp, Pink Lady, Granny Smith, or Braeburn.
- Cut the apples into small, even pieces so the cake bakes uniformly.
- Measure flour by spooning it into the cup and leveling it rather than packing the cup.
- Add ½ cup chopped walnuts or pecans with the apples for extra crunch.
Storage and reheating
Keep the cooled cake covered at room temperature for 1 day or refrigerate for up to 4 days. Bring chilled slices to room temperature before serving. Freeze well-wrapped slices for up to 2 months.
Food-safety note: Because this moist cake contains dairy and fresh fruit, refrigerate it after the first day and discard any cake with signs of spoilage.
Estimated nutrition
Per serving: 270 calories, 4 g protein, 36 g carbohydrate, 13 g fat, 2 g fiber, and 240 mg sodium. Nutrition is an estimate and will vary by brands, substitutions, and serving size.
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