Apple Rhubarb Cake

Published: June 2, 2026

Apple Rhubarb Cake is a soft, moist fruit cake with chunks of tender apple and tart rhubarb baked into a cinnamon-scented batter. It has a golden top, a rustic homemade texture, and a lovely balance of sweet and tangy flavors that makes it perfect for dessert, coffee, or an afternoon snack.

Why You’ll Love This Cake

This cake is simple to make but feels special because of the contrast between the soft crumb and the juicy fruit pieces. Apples add sweetness and body, while rhubarb brings brightness and a little tartness that keeps the cake from tasting too heavy. A light sprinkle of brown sugar on top gives the finished cake a subtle caramel-like crust. It is the kind of recipe that works beautifully for spring and early fall baking.

Ingredients

2 cups all-purpose flour
1 1/2 teaspoons baking powder
1/2 teaspoon salt
1 teaspoon cinnamon
3/4 cup granulated sugar
1/2 cup unsalted butter, softened
2 large eggs
1 teaspoon vanilla extract
1/2 cup milk
1 1/2 cups apples, peeled and diced
1 cup rhubarb, diced
1 tablespoon flour, for tossing the fruit
1 tablespoon brown sugar, for topping

How to Make Apple Rhubarb Cake

Step 1: Prepare the pan and oven

Preheat the oven to 350°F (180°C). Grease an 8-inch round cake pan well so the cake releases cleanly after baking.

Step 2: Mix the dry ingredients

In a bowl, whisk together the flour, baking powder, salt, and cinnamon. This helps distribute the leavening and spice evenly through the batter.

Step 3: Cream the butter and sugar

In another bowl, cream the softened butter and granulated sugar together until light and fluffy. Add the eggs and vanilla, then mix well until the batter looks smooth and well combined.

Step 4: Combine the batter

Add the dry ingredients and milk alternately to the butter mixture, mixing just until combined. Do not overmix, since that can make the cake dense instead of tender.

Step 5: Add the fruit

Toss the apples and rhubarb with 1 tablespoon of flour, then fold them into the batter. The flour helps keep the fruit suspended through the cake instead of sinking to the bottom.

Step 6: Bake the cake

Pour the batter into the prepared pan and smooth the top. Sprinkle the brown sugar over the surface. Bake for 40 to 50 minutes, or until the cake is golden and a toothpick inserted into the center comes out clean.

Step 7: Cool and serve

Let the cake cool before slicing so the crumb sets properly. Serve it plain, with whipped cream, or with a scoop of vanilla ice cream if you want a more dessert-style presentation.

Texture and Flavor

This cake has a soft, moist crumb with little pockets of fruit throughout each slice. The apples become tender and sweet, while the rhubarb softens into bright tart bits that add contrast. Cinnamon gives the cake warmth, and the brown sugar topping adds a gentle sweetness and a lightly crisp finish. The overall result is homey, simple, and satisfying.

Helpful Tips

Use apples that hold their shape well when baked, such as Granny Smith, Honeycrisp, or Braeburn. If your rhubarb is especially tart, you can add a little more sugar to the fruit mixture, but the recipe is nicely balanced as written. Make sure the cake cools before cutting if you want neat slices. For an even richer flavor, serve it slightly warm.

Storage

Store the cake covered at room temperature for up to 2 days or in the refrigerator for up to 4 days. It also freezes well if wrapped tightly and stored in a sealed container. Thaw at room temperature before serving, or warm individual slices briefly for a fresh-baked feel.

FAQ

Can I use frozen rhubarb?
Yes, but thaw and drain it first to avoid extra moisture in the batter.

What apples work best?
Firm baking apples like Granny Smith or Honeycrisp work very well.

Can I make this in a square pan instead?
Yes, an 8×8-inch square pan should work, though the baking time may vary slightly.

Why toss the fruit with flour?
It helps keep the apples and rhubarb evenly distributed in the cake.

Can I skip the cinnamon?
Yes, but the cinnamon adds warmth and pairs especially well with the fruit.

Final Thoughts

Apple Rhubarb Cake is a classic-style fruit cake with great balance, simple ingredients, and a beautiful homemade look. The combination of soft cake, juicy fruit, and a lightly sweet top makes it a reliable recipe for any time rhubarb is in season. It is easy enough for everyday baking but still lovely enough to serve to guests.