One-Bowl Quick Vanilla Sheet Cake with Melted Butter

By AislePrompt Editorial · ·

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are developed and reviewed.

A fluffy, moist vanilla cake made in just one bowl with melted butter and oil for extra tenderness, baked in a sheet pan for easy serving. This American-inspired recipe, ready in about 50 minutes, layers all-purpose flour, granulated sugar, baking powder 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 330 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: 10 min Cook: 40 min Serves 12 American cuisine 330 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 350°F. Grease and flour a 9x13-inch sheet pan.
  2. Step 2: In a large bowl, whisk together 2 1/2 cups all-purpose flour, 1 3/4 cups granulated sugar, 2 1/2 tsp baking powder, and 1/2 tsp salt.
  3. Step 3: Add 3/4 cup melted unsalted butter, 1/4 cup vegetable oil, 4 large eggs, 2 tsp vanilla extract, and 1 cup buttermilk to the dry ingredients.
  4. Step 4: Using a hand mixer or whisk, beat the batter on medium speed for 2-3 minutes until smooth and well combined.
  5. Step 5: Pour the batter evenly into the prepared sheet pan and smooth the surface with a spatula.
  6. Step 6: Bake for 35-40 minutes until a toothpick inserted in the center comes out clean and the edges turn lightly golden.
  7. Step 7: Remove from oven and cool completely in the pan on a wire rack before slicing and serving.

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