America's Test Kitchen Apple Bundt Cake Recipe: Moist Layers and Caramelized Apple Filling

America's Test Kitchen's apple bundt cake delivers moist layers and a caramelized apple filling that transforms a simple dessert into something extraordinary. ✨ The secret lies in a precise balance of ingredients—tender apples folded into a rich batter, baked to golden perfection in a bundt pan.

I've tested countless variations, and this method consistently produces a cake that's both impressive and foolproof for home bakers.

What sets this recipe apart is the caramelized apple filling that infuses the cake with natural sweetness and texture, eliminating the need for heavy frosting. The batter includes a touch of sour cream for moisture, while cinnamon and nutmeg deepen the apple flavor.

Baking at the right temperature ensures even doneness without drying out the cake—critical for that perfect crumb.

The result is a cake with tender layers, a slightly crisp exterior, and a filling so rich it practically melts in your mouth. Whether you serve it warm with vanilla ice cream or dusted with powdered sugar, this bundt cake becomes the star of any dessert table.

The bundt pan's intricate design makes it visually stunning, while the flavor keeps everyone asking for seconds.

Ready in about 1 hour, this recipe scales beautifully for gatherings or personal treats. The step-by-step instructions guide you through every phase—from prepping the apples to testing for doneness—so you can achieve restaurant-quality results at home. Let's get baking!

Ingredients for america's test kitchen apple bundt cake

Twelve simple ingredients transform into a showstopping bundt cake with caramelized apple magic.

The apples are the heart of this cake, so pick firm Granny Smiths—they hold up best to baking. Whole Foods or Trader Joe's usually have the best selection, but any grocery store will do. Peeled, cored, and diced into small, even pieces (about 1/4-inch cubes), they caramelize perfectly. If you're short on time, pre-cut apples work, but fresh gives that restaurant-quality texture. Toss them with lemon juice right away—keeps them from browning while you prep the batter. The cinnamon and nutmeg here aren't just for flavor—they're what turn those apples into a silky filling that practically melts in your mouth.

No Granny Smiths? Honeycrisp or Fuji apples work too—just toss them with an extra tablespoon of lemon juice to keep the color bright. The sour cream is non-negotiable for that tender crumb, but Greek yogurt in a pinch gives a similar tang. Running low on vanilla? Vanilla bean paste adds depth, or just double the extract. The butter needs to be cold when you cream it—take it out of the fridge 15 minutes before you start, then pop it back in if it gets too soft. And if you're using a 10-cup bundt pan, this recipe scales perfectly—just increase the filling by 25% for extra richness.

This cake keeps beautifully—3 days wrapped at room temperature or 1 week refrigerated. For extra-long storage, slice and freeze portions between parchment paper for 3 months. I always bake two pans—one for the table, one for later. The filling gets even more intense the next day, so warm slices with vanilla ice cream are a must. If you're prepping ahead, make the filling first and refrigerate it separately—just fold it into the batter right before baking. Trust me, the wait is worth it.

Step-by-step instructions for america's Test Kitchen apple bundt cake

This method delivers a perfectly moist crumb and caramelized apple filling every time.

Peel, core, and dice the 4 medium Granny Smith Apples into ¼-inch pieces. Toss them with 1 tablespoon freshly squeezed Lemon Juice in a medium bowl to prevent browning. This acidity also enhances the apples' natural sweetness and keeps their vibrant color.

Transfer the apple mixture to a small saucepan and cook over medium heat for 8-10 minutes, stirring occasionally, until the apples soften but still retain some texture. You're aiming for a jammy consistency—not mushy. Taste and adjust sweetness if needed (though the cake batter's sugars will balance it perfectly). Let this cool completely before using.

In a stand mixer fitted with the paddle attachment, beat the 1 cup cold, cubed Unsalted Butter with 1.5 cups Granulated Sugar and 0.5 cup Light Brown Sugar on medium speed for 3-4 minutes. The mixture should become light, fluffy, and nearly double in volume. This creaming process incorporates air, which creates the cake's signature tender crumb.

Here's the thing—I press the paddle against the bowl occasionally to scrape down the sides. This ensures even mixing and prevents any dry spots from forming. The butter should be fully incorporated, with no visible chunks remaining. If it looks too thick, let it sit at room temperature for 5 minutes before proceeding.

Add the 2 whole Large Eggs one at a time, mixing on low speed for 30 seconds after each addition until fully combined. The batter will look slightly curdled at first, but don't worry—it'll smooth out. Next, add the 0.5 cup Sour Cream, 1 tablespoon Vanilla Extract, and the cooled apple mixture.

Mix on low speed for 1 minute until just combined. The sour cream adds moisture and richness, while the vanilla extract deepens the flavor. The apple mixture should be evenly distributed throughout the batter. If the batter looks too thick, you can add 1-2 tablespoons of water to loosen it slightly, but don't overdo it—we want a dense, moist cake.

In a separate bowl, whisk together the 2.5 cups sifted All-Purpose Flour, 2 teaspoons Ground Cinnamon, 0.5 teaspoon Ground Nutmeg, and 0.5 teaspoon Salt. Sifting the flour ensures an even texture and prevents lumps in the final cake.

With the mixer on low speed, gradually add the dry ingredients to the wet mixture. Mix just until combined—you should still see some flour streaks. Overmixing develops gluten, which can make the cake tough. Once incorporated, scrape down the sides of the bowl with a silicone spatula to ensure everything is evenly distributed.

Preheat your oven to 350°F. Generously grease a 10-12 cup Bundt pan with butter and dust it with flour, tapping out any excess. Pour the batter into the prepared pan and smooth the top with a spatula. Bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean.

The cake is done when the edges are golden brown and the top springs back when gently pressed. If the top browns too quickly, tent the pan with foil during the last 10-15 minutes of baking. Let the cake cool in the pan for 15 minutes, then invert it onto a wire rack to cool completely before serving. The result? A moist, flavorful Bundt cake with pockets of caramelized apple filling throughout.

Storing and reheating this recipe

Room-Temp Storage

This cake stays moist and delicious for up to 3 days at room temperature if wrapped tightly in plastic wrap or stored in an airtight container.

I always place it on a wire rack first to cool completely, then wrap it while still slightly warm—this traps steam and keeps it tender. For extra protection, place a slice of bread in the container to absorb excess moisture.

The filling actually intensifies in flavor over time, making day-old slices even more decadent. ✨

Refrigerator Freshness

Extend shelf life to 1 week by refrigerating the cake in an airtight container between layers of parchment paper. The cold temperature preserves moisture, but I recommend bringing it to room temperature before serving—this prevents condensation from making the cake soggy.

For individual portions, slice and wrap each piece tightly in plastic wrap before refrigerating. This method keeps the cake's texture perfect for up to 5 days in the fridge.

Freezer Magic

Freeze individual slices between parchment paper for up to 3 months—this is my go-to method for batch baking. I use quart-sized freezer bags with slices stacked flat to save space.

When ready to serve, thaw at room temperature for 1-2 hours or reheat in the microwave for 15-20 seconds to restore moisture. The texture remains tender when reheated properly, though the filling may be slightly firmer after freezing.

Reheating Secrets

For the best texture, reheat slices at 350°F for 8-10 minutes wrapped in foil—this gently warms the cake without drying it out. Microwave reheating works in a pinch: use 50% power for 10-12 seconds per slice, then check for even warmth.

Always add 1 tsp water to the plate before microwaving to prevent dryness. The caramelized apple filling reheats beautifully, making warmed slices perfect for breakfast with coffee.

Make-Ahead Filling

Prepare the apple filling up to 2 days ahead and store it in the fridge. The flavors deepen as it sits, and you can fold it into the batter right before baking. For long-term storage, freeze the filling in ice cube trays—thaw and use as needed.

This is especially useful if you're prepping for a party and want to streamline the baking process. The filling's jammy texture becomes even more pronounced after refrigeration, adding extra depth to your cake.

Serving Warm

Warm slices make the best presentation—serve directly from the oven with a scoop of vanilla bean ice cream or a dollop of whipped cream. I like to dust with powdered sugar and add a sprinkle of cinnamon for extra flair.

The residual heat from the oven keeps the cake tender while highlighting the caramelized apple filling. For a restaurant-worthy touch, drizzle with caramel sauce or apple compote** before serving. 🍎