Nostalgic Brown Butter Caramel Apple Upside Down Cake

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Why You'll Love This Recipe

• Showstopping Finish: The natural presentation does all the heavy lifting-no frosting or fancy decorating required.
• No Candy Thermometer Needed: The caramel layer comes together in minutes on the stovetop with simple pantry staples.
• Rich Brown Butter Base: Nutty brown butter adds a complex, caramel-like depth to the cake batter.
• Ultra-Moist Crumb: Sour cream adds acidity and fat to keep the cake tender for days.
• Versatile Pans: Works beautifully in a 9-inch round cake pan, springform pan, or cast-iron skillet.

Key Ingredients & What They Do

For the Caramel Apple Topping

• Firm Baking Apples: Honeycrisp, Granny Smith, or Pink Lady apples hold their shape during a 45-minute bake. Soft varieties like Red Delicious break down into mush under hot caramel.
• Salted Butter & Dark Brown Sugar: Dark brown sugar contains more molasses than light brown sugar, creating a deeper, toffee-like flavor. Salted butter balances the sugar so the caramel doesn't taste cloying.
• Real Maple Syrup & Warm Spices: A splash of pure maple syrup paired with cinnamon and allspice infuses the fruit layer with authentic autumn warmth.

For the Spiced Cake Batter

• Browned Butter: Foaming and browning the butter toasts the natural milk solids, unleashing a nutty, caramel aroma that elevates a basic cake batter into something extraordinary.
• Sour Cream (or Sourdough Discard): Lactic acid in the sour cream tenderizes gluten strands and adds essential moisture, ensuring the cake stays dense and velvety instead of drying out. (Optionally swap 1:1 with sourdough discard for a subtle tang).
• Warm Spice Blend: A combination of cinnamon, nutmeg, allspice, and cloves provides that classic, nostalgic bakery aroma in every bite.
• Room-Temperature Eggs & Whole Milk: Using room-temperature dairy prevents the melted brown butter from seizing up when whisked into the wet ingredients.

The Best Apples for Upside-Down Cake

Choosing the right apple variety is critical. Soft apples break down during the 45-minute bake, turning into mush and making the top of the cake soggy.

Look for firm, crisp varieties that hold their shape and offer a sweet-tart balance to cut through the rich caramel:

• Honeycrisp: Holds its structure perfectly with a sweet, juicy crunch.
• Granny Smith: The ultimate tart baking apple; balances the sweet brown sugar caramel.
• Pink Lady (Cripps Pink): Crisp, dense, and offers a beautiful pinkish-gold hue when caramelized.

Why Brown Butter & Sour Cream Make the Difference

A standard white cake batter can get weighed down by sticky fruit toppings. This recipe uses two key ingredients to ensure the cake stands up to the caramel layer:

1. Brown Butter: Melting and gently foamy-browning the butter toasts the milk solids, infusing the batter with a rich, nutty aroma that complements autumn spices like cinnamon, nutmeg, allspice, and cloves.
2. Sour Cream: Adds moisture and lactic acid. The acid weakens gluten bonds, resulting in an exceptionally tender, fine crumb that doesn't dry out.

How to Flip an Upside-Down Cake Without a Mess

Flipping a warm cake can feel intimidating, but following these three rules guarantees a flawless release:

1. Parchment Paper is Insurance: Always line the bottom of your round pan with a circle of parchment paper, even if using a non-stick or springform pan.
2. Timing the Rest (15-20 Minutes): If you flip the cake immediately out of the oven, the boiling caramel will run off and the hot cake will break apart. If you wait until it's completely cold, the caramel hardens and sticks to the pan. 20 minutes is the sweet spot.
3. The Warm Towel Trick: If you feel resistance when turning the pan over, place a dish towel soaked in hot water over the bottom of the inverted pan for 30 seconds to melt any stubborn caramel before lifting the pan away.

Step-by-Step Baking Process

1. Prep the Caramel: In a small saucepan over medium heat, melt 6 tablespoons of butter and brown sugar until smooth and bubbly. Whisk in spices, maple syrup, and vanilla.
2. Layer the Apples: Pour the caramel into a parchment-lined 9-inch cake pan. Arrange sliced apples in an overlapping fan pattern over the caramel (and sprinkle with chopped walnuts if using).
3. Brown the Butter & Mix Batter: Brown ½ cup of butter in a saucepan over medium heat until golden and nutty; let cool slightly. Whisk dry ingredients in one bowl. In a second bowl, whisk the browned butter, sugars, eggs, sour cream, milk, and vanilla. Fold dry ingredients into wet until just combined.
4. Bake: Spread the thick batter carefully over the apples. Bake at 350°F (175°C) for 40-45 minutes until a toothpick inserted in the center comes out clean.
5. Cool & Invert: Cool on a wire rack for 15-20 minutes. Run a butter knife around the edges, place a wide plate over the pan, and invert in one confident motion.

My Kitchen Notes: Optional Sourdough Discard Swap

• Optional Sourdough Discard Substitution: If you have sourdough discard on your counter you want to use up, you can swap the ⅓ cup of sour cream for an equal amount of 100% hydration sourdough discard. It adds a subtle, delicious tang!
• Room-Temperature Dairy & Eggs: Cold eggs or cold milk added to browned butter will cause the fat to solidify and turn the batter lumpy. Keep your ingredients at room temperature before mixing.
• Salt Balance: Don't skip the salt! A pinch of kosher or flaky sea salt over the finished caramel topping cuts through the sugar and brings out the warm spice notes.

Storage & Freezing Instructions

• Room Temperature: Cover tightly and store at room temperature for up to 2 days.
• Refrigerator: Store in an airtight container for up to 4-5 days. Reheat individual slices in the oven or microwave for 10 seconds to loosen the caramel before serving.
• Freezing: Wrap individual slices in plastic wrap and foil; freeze for up to 2 months. Thaw at room temperature. (Note: Freezing the entire cake at once is not recommended, as the fruit topping can release excess liquid upon thawing).

Looking for more cozy apple recipes? You'll love:

Brown Butter Caramel Apple Upside Down Cake

Eryn Whalen

A tender, warmly spiced cake baked beneath a layer of soft apples and rich brown butter caramel, then flipped to reveal its golden, sticky top. This upside-down cake is simple and comforting, the kind of dessert that feels right at home on a fall afternoon-served warm with a spoonful of whipped cream or melting scoop of vanilla ice cream.

5 from 1 vote

Print Recipe Pin Recipe

Prep Time 25 minutes mins

Cook Time 45 minutes mins

Total Time 1 hour hr 10 minutes mins

Course Dessert

Cuisine American

Servings 10 slices - 1 slice per serving

Calories 412 kcal

Ingredients

  

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For the Caramel Apple Topping:

• 6 tablespoon salted butter
• ½ cup packed dark brown sugar
• 1 teaspoon real maple syrup optional
• ¼ teaspoon ground cinnamon
• ¼ teaspoon ground allspice
• ½ teaspoon pure vanilla extract
• 2 medium fresh apples like Honeycrisp, Granny Smith, or Pink Lady, peeled and thinly sliced
• 1 teaspoon lemon juice
• ¼ cup chopped walnuts (optional)

For the Cake Batter:

• 1½ cups all-purpose flour or high-protein flour
• 1½ teaspoons baking powder
• ½ teaspoon baking soda
• 1 teaspoon ground cinnamon
• ¼ teaspoon ground nutmeg
• ¼ teaspoon ground allspice
• ¼ teaspoon ground cloves
• ½ teaspoon salt
• ½ cup salted butter browned and cooled slightly
• ½ cup granulated sugar
• ½ cup packed brown sugar
• 2 large eggs room temperature
• ⅓ cup sour cream or ⅓ cup sourdough discard
• ¼ cup whole milk
• 1 teaspoon vanilla extract

Instructions

 

• Heat oven to 350°F. Line a 9-inch round cake pan with parchment paper and lightly grease the sides.
• Combine butter and brown sugar in a small saucepan over medium heat. Stir until melted and bubbly. Remove from heat and stir in cinnamon, allspice, maple syrup (if using), and vanilla.
• Arrange apple slices over the bottom of the pan on top of the caramel mixture in an even layer. Sprinkle with walnuts if using.
• In a medium bowl, combine flour, baking powder, baking soda, salt, and spices. Set aside.
• In a large mixing bowl, whisk together browned butter, both sugars, eggs, sour cream, milk, and vanilla until smooth.
• Add the dry ingredients to the wet and mix with a spatula or on low speed using an electric mixer, scraping the sides of the bowl. Do not overmix.
• Pour the cake batter over the apples in the prepared pan and smooth into an even layer.
• Bake in the preheated oven for 40-45 minutes, or until the center of the cake tests done.
• Cool for 15-20 minutes on a wire rack. Run a knife around the edges of the cake, place a serving plate on top, and invert to release the caramelized apples on top.
• Let the cake cool slightly before slicing. Serve warm with vanilla ice cream.

Notes

1. Room-temperature ingredients matter:
Cold eggs or milk can cause the butter to firm up again and create a lumpy batter. Let your ingredients sit out for about 30 minutes before mixing for a smooth, even texture.

2. Layer your apples with purpose:
If you want a picture-perfect top once flipped, take a moment to arrange the apple slices in a circular or fan pattern. It’s worth the extra two minutes and makes the cake look special without any extra effort.

3. Don’t rush the flip:
Let the cake rest at least 15–20 minutes before turning it out of the pan. Flipping too soon can cause the caramel to run off or the apples to slide. Waiting lets everything set just enough to hold together beautifully.

4. Know your caramel cues:
When melting the butter and brown sugar, stir only until smooth and glossy—if it bubbles too long, it can turn grainy. A quick melt and pour is the secret to that silky finish.

5. Keep moisture in balance:
If your apples are extra juicy, pat them dry before layering. Too much moisture can thin the caramel or make the cake soggy at the bottom.

6. A sprinkle of salt goes a long way:
A light pinch of flaky salt on the finished cake balances the sweetness and brings out the brown butter and spice notes. It’s a small touch that makes a big difference.

7. Make it ahead-friendly:
Bake the cake the day before serving, let it cool completely, and rewarm slices just before serving. The flavors deepen overnight and the caramel gets even richer.

8. Quick fix for sticking:
If the cake doesn’t release easily, set the bottom of the pan over a warm towel for 20–30 seconds to loosen the caramel. Then flip again—it’ll slide right out.

9. Perfect pairing:
A drizzle of warm maple butter or a scoop of cinnamon ice cream complements the caramel flavor beautifully and makes each bite feel indulgent.

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Nutrition

Calories: 412kcalCarbohydrates: 51gProtein: 4gFat: 21gSaturated Fat: 12gPolyunsaturated Fat: 2gMonounsaturated Fat: 5gTrans Fat: 1gCholesterol: 85mgSodium: 385mgPotassium: 130mgFiber: 2gSugar: 35gVitamin A: 627IUVitamin C: 2mgCalcium: 82mgIron: 1mg

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