By Grocery List Plus Editorial Staff | Published on June 12, 2026
Serves 12
354 cal · 28 min
Peanut Butter Cake
Recipe GLPR50bd758ee3deaf
A rich and tender sheet cake with the warm flavor of peanut butter throughout. This simple dessert comes together quickly with melted butter and peanut butter mixed into the batter, creating a moist crumb that's perfect for serving at gatherings. The cake is baked until golden and springs back when lightly touched.
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Ingredients
1 cup butter
1 cup water
½ cup creamy peanut butter
2 cups all-purpose flour
1½ cups brown sugar
½ teaspoon salt
1 teaspoon baking soda
2 eggs
1 teaspoon vanilla extract
1 cup buttermilk
Directions
Preheat your oven to 350°F. Coat an 18x13-inch rimmed baking sheet generously with nonstick baking spray or grease it thoroughly with butter and a light dusting of flour. Make sure the entire surface is well-covered, tapping out any excess flour.
In a medium saucepan, combine the butter, water, and peanut butter over medium heat. Stir frequently until the mixture comes to a rolling boil.
Remove the saucepan from the heat and let it cool slightly for about 1 minute.
Add the flour, brown sugar, salt, and baking soda to the warm mixture. Whisk together gently until just combined and no dry streaks remain.
Stir in the eggs one at a time, then add the vanilla extract and buttermilk. Mix until the batter is smooth.
Pour the batter evenly into the prepared baking sheet. Bake for 20 minutes, or until a toothpick inserted into the center comes out clean and the cake springs back when lightly touched in the center.
Comments
All ingredients are staple items found at any Charlotte grocery chain without a second trip—butter, eggs, buttermilk, peanut butter, and dry goods are universal. Cost per serving lands around 60–75 cents, driven mainly by butter and eggs; peanut butter is cheap protein here in the South. The stated 28 minutes ignores mixing, creaming butter, and oven prep; plan for 40 minutes realistically. This is a straightforward single-layer or sheet cake that reheats well and feeds a family easily, though it demands no special attention once in the oven.
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