How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Peanut Butter Sheet Cake ?

You need 16 ingredients. The key ingredients include: FOR CAKE:, 1/2 CUP PEANUT BUTTER, 1 CUP WATER, 2 LARGE EGGS, and more.

Is Peanut Butter Sheet Cake suitable as baking & desserts?

Yes, Peanut Butter Sheet Cake falls under the Baking & Desserts category and is a great choice for this type of meal.

How do I store leftover Peanut Butter Sheet Cake ?

Store in an airtight container at room temperature for up to 3–5 days. For longer storage, freeze for up to 3 months — no need to refrigerate or reheat.

Peanut Butter Sheet Cake Recipe

Name: Peanut Butter Sheet Cake
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: FOR CAKE:; 1/2 CUP PEANUT BUTTER; 1 CUP WATER; 2 LARGE EGGS; 1 TEASPOON VANILLA; 1 CUP BUTTER OR MARGARINE; 1/2 CUP BUTTERMILK; 2 CUPS FLOUR; 2 CUPS GRANULATED SUGAR; 1 TEASPOON SALT 1 TEASPOON BAKING SODA; FOR FROSTING:; 1/2 CUP PEANUT BUTTER; 1/2 CUP BUTTER OR MARGARINE; 6 TABLESPOONS BUTTERMILK; 4 CUPS POWDERED SUGAR; 1 TEASPOON VANILLA

Bake this irresistible Peanut Butter Sheet Cake at home. Made with CAKE, PEANUT BUTTER, WATER and EGGS. Easy step-by-step instructions included.

This Peanut Butter Sheet Cake relies on simple, everyday ingredients such as for cake:, peanut butter, water and large eggs. It comes together quickly and makes 4 servings, at about 2466 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

Whether you're rounding off a family dinner, bringing a treat to a gathering, or simply satisfying a sweet craving, this Peanut Butter Sheet Cake delivers. Serve it warm or at room temperature, and add a scoop of ice cream or a spoonful of whipped cream for an extra-special finish.

Updated Jun 30, 2026

Serves 4 Baking & Desserts

2466

kcal

Calories

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Preheat the oven fully and bake on the middle rack for the most even results.
Check for doneness a few minutes early — a toothpick in the center should come out with just a few moist crumbs.
Let it cool before slicing so it sets properly and holds its shape.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Brown sugar instead of white sugar adds a deeper, more caramel-like flavor.
A good 1:1 gluten-free flour blend works well if you need a gluten-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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Peanut Butter Sheet Cake

Tips for the best results

Variations & substitutions

My Personal Notes

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