Tomato Soup Spice Cake with Brown Butter Frosting

Tomato soup spice cake is a century-old recipe that keeps going viral on TikTok because of the sheer audacity of putting condensed tomato soup in a cake. The Internet reacts with suspicion, then disbelief, then wait-this-is-actually-incredible. The tomato soup doesn’t make the cake taste like soup — the spice ratio is heavy enough to completely mask any tomato flavor. What the soup does is create an incredibly moist crumb that stays tender for days, and the acidity reacts with the baking soda for extra rise. The brown butter frosting is the salty-sweet counterpoint that makes people go back for seconds.

Why You’ll Love This Tomato Soup Spice Cake

• Shockingly moist — the tomato soup creates a crumb that stays tender for 4 days.
• One-bowl recipe — no creaming, no folding, no stand mixer needed.
• Century-old recipe — not a TikTok gimmick; this is from the 1920s.
• Brown butter frosting — nutty, caramelized, the perfect counterpoint.
• No one guesses the secret ingredient.

Ingredients

You need condensed tomato soup — the regular kind from the can (Campbell’s works). Not tomato broth, not diced tomatoes. Half a can goes into the batter, half into the frosting. One can, zero waste.

• 1 can (10.75 oz) condensed tomato soup (divided: half for batter, half for frosting)
• 2 cups all-purpose flour
• cups granulated sugar
• 1 tsp baking soda
• 1 tsp ground cinnamon
• tsp ground cloves
• tsp ground nutmeg
• tsp ground allspice
• cup vegetable oil
• 2 large eggs
• cup water
• 6 tbsp unsalted butter (for brown butter frosting)
• 3 cups powdered sugar
• 2 oz cream cheese, softened
• cup chopped pecans (for topping)

Equipment

• 9×13 inch baking pan
• Medium saucepan for browning the butter.
• Hand mixer for frosting.
• Spatula and toothpick for doneness testing.

How to Make Tomato Soup Spice Cake

Step 1 — Make the batter (5 minutes)

Preheat oven to 350°F. Grease and flour a 9×13 pan. Whisk flour, sugar, baking soda, cinnamon, cloves, nutmeg, and allspice in a large bowl. In another bowl, whisk half the can of tomato soup, oil, eggs, and water. Pour wet into dry and stir until just combined — the batter will be thin. Pour into prepared pan.

Step 2 — Bake (35-40 minutes)

Bake 35-40 minutes until a toothpick comes out clean. The top will be very dark brown from the tomato sugars caramelizing. Cool in the pan 10 minutes, then turn out onto a wire rack to cool completely.

Step 3 — Brown the butter (5 minutes)

Melt butter in a saucepan over medium heat. Once melted, it will foam vigorously — keep swirling. After 3-4 minutes the foam subsides and you’ll see golden-brown specks and smell a nutty aroma. Remove from heat immediately and pour into a heatproof bowl. The difference between brown and burnt is about 15 seconds.

Step 4 — Make the frosting (5 minutes)

Beat cream cheese until smooth. Add powdered sugar one cup at a time. Pour in the remaining half-can of tomato soup and 2 tablespoons of browned butter. Beat on medium-high for 2 minutes until fluffy. The frosting will be salmon-pink from the tomato soup.

Step 5 — Frost and serve

Once the cake is completely cool, spread frosting evenly over the top. Scatter chopped pecans on top. Cut into 16 squares.

Pro Tips

Don’t overbake. Check at 35 minutes. The center should be set but the carryover heat will finish it on the rack.

Brown the butter carefully. Medium heat, constant swirling. If you burn it, start over — burnt butter tastes acrid.

Taste the batter if you’re nervous. You won’t taste tomato. The spice ratio is high enough that this reads as a warmly-spiced cake.

This cake improves overnight. Day 2 is better than Day 1 as the moisture distributes.

Variations & Substitutions

Layer cake

Bake in two 9-inch round pans for 25 minutes. Double the frosting and fill between layers.

Cupcakes

Fill muffin cups 2/3 full. Bake 18-20 minutes. Frosting covers 24 cupcakes.

Cream cheese alternative

Make a brown butter glaze: 3 cups powdered sugar + 4 tablespoons browned butter + 3 tablespoons milk.

Storage & Reheating

Room temperature: Up to 3 days under a cake dome. Better than the fridge, which dries out spice cake.

Refrigerator: Up to 5 days. Bring to room temperature before serving.

Freezer: Wrap unfrosted cake tightly and freeze up to 3 months. Frost after thawing.

What to Serve With Tomato Soup Spice Cake

This cake pairs beautifully with our cinnamon roll cake for a bake-sale duo.

For a holiday cookie plate, cut into small squares alongside our red velvet brownies.

For the brown butter technique, see Serious Eats’ guide to browning butter.

Nutrition Information

Per serving (1/16 of cake with frosting): approximately 340 calories, 4g protein, 58g carbohydrates, 12g fat, 1g fiber.

Frequently Asked Questions

Does tomato soup spice cake actually taste like tomatoes?

No. The spice ratio completely masks the tomato. You get a warm, tangy spice cake that no one can identify the secret ingredient in.

Can I use fresh tomato puree instead of canned soup?

Not recommended. Condensed soup has the right concentration of solids, sugar, and acid.

Why did my cake sink in the middle?

Too much leavening or underbaking. The batter is thin and needs a full 35-40 minutes.

Can I skip the frosting?

A dusting of powdered sugar is traditional. But the brown butter frosting elevates it to a proper dessert in 10 minutes.

This tomato soup spice cake is proof that the old recipes stuck around for a reason. The moisture from the condensed soup, the warm spice blend, and the brown butter frosting make this genuinely one of the best spice cakes you will ever make. Save this for the next time someone says they have tried every cake recipe.