Zesty Key Lime Layer Cake with Cream Cheese Frosting

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A moist, tangy key lime cake layered with smooth cream cheese frosting, perfect for citrus lovers seeking a refreshing dessert. This american-inspired desserts ready in about 55 minutes layers all-purpose flour, baking powder, salt into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 400 calories and feeds 12, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 20 min Cook: 35 min Serves 12 American cuisine 400 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 350°F. In a bowl, whisk together 2 1/2 cups all-purpose flour, 2 1/2 tsp baking powder, and 1/2 tsp salt. Set aside.
  2. Step 2: In a large bowl, beat 1 cup softened unsalted butter with 2 cups granulated sugar until light and fluffy, about 4 minutes.
  3. Step 3: Add 4 large eggs one at a time, beating well after each addition, then mix in 1/2 cup fresh key lime juice and 2 tbsp key lime zest.
  4. Step 4: Alternately add the dry flour mixture and 1 cup buttermilk to the wet ingredients, beginning and ending with flour, mixing until just combined.
  5. Step 5: Divide batter evenly between two 9-inch round cake pans lined with parchment paper. Bake for 30-35 minutes until a toothpick inserted comes out clean.
  6. Step 6: For frosting, beat 8 oz softened cream cheese with 1 tsp vanilla extract until smooth. Gradually add 3 cups powdered sugar and beat until fluffy.
  7. Step 7: Once cakes cool completely, spread frosting evenly between layers and on top. Chill for 1 hour before slicing.

Equipment for this recipe

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Frequently asked questions

How long does Zesty Key Lime Layer Cake with Cream Cheese Frosting take to make?

Total time is about 55 minutes (20 min prep + 35 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.

How do I store leftover Zesty Key Lime Layer Cake with Cream Cheese Frosting?

Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.

Can I substitute ingredients in Zesty Key Lime Layer Cake with Cream Cheese Frosting?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Zesty Key Lime Layer Cake with Cream Cheese Frosting for a different number of people?

The recipe is written for 12 servings. Multiply each ingredient by (your serving target / 12). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Zesty Key Lime Layer Cake with Cream Cheese Frosting?

American desserts like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.