Hand-Mixed Vanilla Sheet Cake with Melted Butter and Oil

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 moist, fluffy vanilla sheet cake made with melted butter and oil to retain moisture, perfect for quick celebrations or everyday treats. This American-inspired recipe, ready in about 45 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: 35 min Serves 12 American cuisine 330 cal/serving
Build a week of meals around this recipe → Shop this recipe on Instacart → Shop equipment ↓

Ingredients

The bakeware we’d bake this in → Best Bakeware Sets in 2026: Top Picks + Buying Guide

Affiliate disclosure: AislePrompt may earn a commission on qualifying purchases made through Amazon links, at no additional cost to you. See our policy →

Equipment for this recipe

Tools this recipe's steps call for, with a link to each on Amazon.

More Bakeware & baking tools → Shop all kitchen tools →

Instructions

  1. Step 1: Preheat your oven to 350°F and grease a 9x13-inch baking pan. In a large bowl, whisk together 2 cups all-purpose flour, 2 tbsp cornstarch, 1 tbsp baking powder, 1/2 tsp salt, and 1 3/4 cups granulated sugar until well combined.
  2. Step 2: Add 1/2 cup melted unsalted butter and 1/4 cup vegetable oil to the dry ingredients along with 3 large eggs, 1 cup whole milk, and 2 tsp vanilla extract. Stir gently with a wooden spoon or rubber spatula until the batter is smooth and no dry flour remains.
  3. Step 3: Pour the batter evenly into the prepared baking pan and smooth the top with a spatula.
  4. Step 4: Bake for 30-35 minutes until a toothpick inserted into the center comes out clean and the cake springs back lightly when touched. Let cool completely before frosting or serving.

Related recipes