Raspberry Swirl Cake (Soft and Moist Vanilla Loaf)

The raspberry swirls are made with raspberry jelly powder, which gives the cake its lovely color and fruity flavor. Every slice has a different marbled pattern, making this cake as pretty as it is delicious.

I especially love this cake the next day, when the vanilla and raspberry flavors have had time to develop. A slice with a cup of hot black coffee is my favorite way to enjoy it!

A Cake That’s Close to My Heart

This raspberry swirl cake has a special place in my heart. The combination of vanilla and raspberry reminds my sister and me of the raspberry and vanilla ice cream our mom used to buy us when we were children.

Those familiar flavors bring back wonderful memories of our childhood and the happy moments we shared with her.

I think that’s one of the beautiful things about homemade food. Sometimes, a familiar flavor can bring back memories of people we love and moments we will always treasure.

If you enjoy vanilla cake with a fruity twist, I hope you’ll give this recipe a try. You might also like my Jelly Mousse Cake, Pineapple Upside Down Cake, and my Apple Upside Down Cake with Almond.

Ingredients You’ll Need

This cake uses simple baking ingredients, with raspberry jelly powder adding a fruity twist.

For the Vanilla Cake

• Butter: Adds a rich, buttery flavor. Use softened butter, not melted butter, so it combines properly with the oil and sugar.
• Oil: Helps the cake retain moisture and keeps the crumb tender, including after refrigeration.
• Sugar: Sweetens the cake and helps create a soft texture.
• Eggs: Give the cake structure and richness. Room-temperature eggs incorporate more easily into the batter.
• Vanilla extract: Adds a lovely aroma and complements the raspberry flavor.
• All-purpose flour: Provides the structure of the cake.
• Baking powder: Helps the cake rise and gives it a lighter texture.
• Salt: Balances the sweetness and brings out the other flavors.
• Milk: Adds moisture and helps create a smooth batter.
• White vinegar: Helps neutralize any lingering eggy smell and reacts with the baking powder to help create a lighter, more tender crumb. Don’t worry, you won’t taste the vinegar in the finished cake!.

For the Raspberry Swirl

• Raspberry jelly powder: Gives the raspberry batter its color, flavor, and a little tang.
• Warm water: Helps dissolve the jelly powder before it is mixed into the cake batter.

A note about raspberry jelly powder: The strength of the raspberry flavor and the intensity of the pink color can vary depending on the brand you use. Some brands have a stronger raspberry flavor, while others are milder.

I used 15 grams in this recipe, which gave my cake a balanced raspberry flavor without overpowering the vanilla.

How to Make Raspberry Swirl Cake

This cake is easy to prepare, and you don’t need any special equipment to create the beautiful marbled effect. A simple butter knife will do the job!

Step 1: Prepare the Pan and Oven

• Preheat your oven to 180°C (350°F).
• Line a 9 × 5 × 3-inch loaf pan with parchment paper, leaving some overhang to make removing the cake easier.

Step 2: Mix the Butter and Oil

• In a large mixing bowl, combine the softened butter and oil.
• Using a whisk or hand mixer, mix for three minutes until well combined.
• Add the sugar and continue mixing until the mixture is fluffy.

Step 3: Add the Eggs and Vanilla

• Add one egg and the vanilla extract, then beat well.
• Add the second egg and mix until combined.

Step 4: Add the Milk and Dry Ingredients

• Pour in half of the milk and mix for one minute.
• In a separate bowl, combine the all-purpose flour, salt, and baking powder.
• Add half of the dry ingredients to the wet mixture and mix briefly.
• Pour in the remaining milk and white vinegar, mixing for a few seconds.
• Finally, add the remaining flour mixture and mix just until combined.
• Avoid overmixing the batter, as this can make the cake less tender.

Step 5: Prepare the Raspberry Batter

• The complete cake batter should weigh approximately 675 grams.
• Transfer 169 grams of the batter to a separate bowl.
• In a small bowl, combine the raspberry jelly powder with one tablespoon of warm water. Stir until dissolved.
• Add the raspberry mixture to the 169 grams of reserved batter and mix until the color is evenly distributed.
• You should now have two batters: vanilla and raspberry.

Step 6: Layer the Batters

• Add three large scoops of vanilla batter to the prepared loaf pan.
• Spoon small amounts of raspberry batter over the vanilla batter.
• Repeat these layers, alternating between the vanilla and raspberry batters until all the batter has been used.
• You don’t need to make the layers perfectly even. The marbling process will create the pattern.

Step 7: Create the Raspberry Swirls

This is my favorite part!

• Insert a butter knife into the batter, making sure it reaches the bottom of the pan.
• Move the knife lengthwise through the batter, from one end of the pan to the other. At the end, make a U-turn and continue in the opposite direction. Repeat this movement to create a continuous winding pattern.
• Next, move the knife from side to side across the width of the pan.
• Finish by repeating the lengthwise U-turn movement.
• This technique distributes the raspberry batter through the vanilla batter, creating beautiful swirls that run through the cake rather than appearing only on the surface.

Tip: You don’t need to create a perfect pattern. Every cake will have its own unique swirls, and that’s part of its charm!

Step 8: Bake the Cake

• Place the loaf pan in the preheated oven and bake for 43–45 minutes, or until a skewer inserted into the center comes out clean.
• If the top starts browning too quickly, loosely cover the cake with aluminum foil. This will help protect the top from becoming too dark while the center finishes baking.
• Allow the cake to cool before slicing so the crumb can set and the marbled pattern stays intact.

My Tips for the Best Raspberry Swirl Cake

1. Use Softened Butter

The butter should be soft enough to mix easily but not melted. This helps it combine with the oil and sugar.

2. Use Room-Temperature Eggs

Cold eggs can make the butter mixture look curdled. Room-temperature eggs blend more easily with the other ingredients.

3. Don’t Overmix the Batter

Once you add the flour, mix only until it is incorporated. Overmixing can develop too much gluten and make the cake dense or tough.

4. Dissolve the Raspberry Jelly Powder

Mix the jelly powder with the warm water before adding it to the reserved batter. This helps distribute the flavor and color more evenly.

5. Let the Knife Reach the Bottom

When marbling the cake, move the knife through the full depth of the batter. This helps create swirls throughout the loaf rather than only on the surface.

6. Use Foil to Prevent Excessive Browning

Loaf cakes need time to bake through because the batter is relatively deep.

If the top is becoming too brown before the center is cooked, loosely place a piece of aluminum foil over the pan and continue baking.

Don’t wait until the top has already become very dark!

7. Give the Cake Time to Rest

Although this cake tastes delicious on the day it’s baked, I find that the raspberry and vanilla flavors are even better the next day.

If you can resist cutting another slice, save some for tomorrow!

Why This Cake Stays Moist

One of my favorite things about this raspberry swirl cake is how well it retains its moisture.

The recipe uses both butter and oil, and each ingredient has a different purpose.

Butter provides the rich flavor that makes homemade cakes so delicious. Oil, on the other hand, remains liquid at lower temperatures and helps the cake retain a softer texture.

Together, they create a cake that has a lovely buttery flavor while staying moist and tender.

This combination is especially useful when you refrigerate the cake. Butter firms up in the refrigerator, but the oil helps prevent the crumb from becoming excessively firm.

For the best texture, you can let a refrigerated slice sit at room temperature for a little while before serving.

How to Store Raspberry Swirl Cake

At room temperature: Once the cake has cooled completely, store it in an airtight container for up to two days in a cool room.

In the refrigerator: Keep the cake in an airtight container for up to five days. The combination of butter and oil helps it retain moisture, even when chilled.

I actually enjoy the flavor more the next day because the raspberry and vanilla flavors become more pronounced.

In the freezer: Wrap individual slices tightly, place them in a freezer-safe container, and freeze for up to two months. Thaw in the refrigerator or at room temperature before serving.

Avoid leaving the cake uncovered, as exposure to air will gradually dry it out.

What to Serve With Raspberry Swirl Cake

You can enjoy this cake on its own, but I especially recommend serving it with a cup of hot black coffee.

I personally prefer black coffee to milk with this cake. The coffee’s slight bitterness balances the sweetness of the vanilla cake and complements the fruity, slightly tangy raspberry swirls.

It’s a simple combination, but one I genuinely enjoy.

The cake also goes well with tea or a glass of milk if that’s what you prefer.