Name: Peanut Butter Cake
Prep time: 20 min
Cook time: 30 min
Total time: 60 min
Ingredients: 2 1/2 cups 312g all-purpose flour; 1 1/2 cups 300g granulated sugar; 1 tbsp baking powder; 1/2 tsp salt; 3/4 cup 170g unsalted butter, room temperature; 1 cup 250g creamy peanut butter (divided: 3/4 cup for frosting, 1/4 cup for batter); 3 large eggs (room temperature); 1 cup 240ml whole milk; 1 tsp vanilla extract; 1/2 cup 120ml sour cream or plain yogurt; For frosting: 3/4 cup

Here’s a luscious peanut butter cake that balances tender, buttery layers with a smooth, creamy peanut butter frosting. This cake is rich but not overpowering — ideal for peanut lovers and those seeking a nostalgic, comforting dessert. Presented as a layered cake with shiny peanut butter frosting, it works for birthdays, gatherings, or an indulgent teatime slice.

Ingredients

– 2 1/2 cups (312g) all-purpose flour

– 1 1/2 cups (300g) granulated sugar

– 1 tbsp baking powder

– 1/2 tsp salt

– 3/4 cup (170g) unsalted butter, room temperature

– 1 cup (250g) creamy peanut butter (divided: 3/4 cup for frosting, 1/4 cup for batter)

– 3 large eggs, room temperature

– 1 cup (240ml) whole milk

– 1 tsp vanilla extract

– 1/2 cup (120ml) sour cream or plain yogurt

– For frosting: 3/4 cup (170g) creamy peanut butter, 1/2 cup (113g) unsalted butter softened, 2–3 cups (240–360g) powdered sugar, 2–4 tbsp milk or cream, pinch of salt

Servings and Cooking Time

Servings: 10–12 slices (serving size ~1 slice, 110–140g)

Preparation time: 20 minutes

Baking time: 25–30 minutes per 9-inch layer (or 30–35 minutes for two 8-inch layers)

Total time: ~1 hour including cooling and frosting

Nutritional Value

Nutritional information per 1 serving (1 slice ≈ 120 g):

– Calories: ~420 kcal

– Fat: 24 g

– Saturated Fat: 7 g

– Carbohydrates: 44 g

– Sugars: 28 g

– Protein: 9 g

– Fiber: 1.5 g

This nutritional estimate is for one person (one slice) and will vary with portion size and exact ingredients.

Step-by-Step Cooking Process

– Preheat oven to 350°F (175°C). Grease and flour two 9-inch round pans; line bottoms with parchment.

– Whisk flour, baking powder, and salt in a bowl; set aside.

– Beat butter and 1 cup sugar until light and fluffy, about 3–4 minutes.

– Add 1/4 cup peanut butter and beat until incorporated.

– Add eggs one at a time, beating after each; stir in vanilla.

– Alternate adding dry ingredients and milk in three additions, beginning and ending with dry ingredients; fold in sour cream.

– Divide batter between prepared pans and smooth tops.

– Bake 25–30 minutes or until a toothpick in center comes out clean.

– Cool in pans 10 minutes, then remove to wire racks to cool completely.

– Make frosting: beat butter and 3/4 cup peanut butter until smooth, add powdered sugar gradually and thin with milk to spreadable consistency; season with a pinch of salt.

– Level cakes if needed, place first layer on board, spread a thin layer of frosting, stack second layer and crumb-coat. Chill 15 minutes, then finish frosting and smooth.

– Chill briefly to set, slice, and serve.

– Store leftovers covered in refrigerator for up to 4 days.

Alternative Ingredients

You can swap creamy peanut butter for natural peanut butter (stir well) or use almond butter for a different nut flavor. Replace half the all-purpose flour with whole wheat pastry flour for a nuttier profile. Use dairy-free milk and vegan butter to make it dairy-free (texture will be slightly different).

Serving and Pairings

Serve slices with a dollop of whipped cream, vanilla ice cream, or fresh berries to cut richness. Pair with strong coffee, cold milk, or a mild black tea. For a party, plate with salted caramel drizzle or chopped roasted peanuts for crunch.

Storage and Reheating

Store the cake covered in the refrigerator for up to 4 days; bring to room temperature before serving for best texture. For longer storage, freeze individual slices wrapped tightly in plastic and foil for up to 2 months; thaw in fridge overnight and bring to room temperature. Avoid reheating in microwave too long or frosting may melt.

Cooking Mistakes

–

Overmixing batter — makes cake dense.
Underbaking — causes collapse; test with a toothpick.
Using cold ingredients — prevents proper emulsion.
Not leveling layers — uneven stacking and slipping.
Adding too much milk to frosting — makes it runny.
Skipping chilling after crumb coat — causes crumbs in final coat.

Helpful Tips

–

Room-temperature eggs and butter give a lighter crumb.
Warm peanut butter slightly to make it easier to beat into frosting.
Use an offset spatula for smooth frosting finishes.
Toast and chop peanuts to sprinkle on top for texture contrast.

FAQs

How can I make this peanut butter cake moist?

Use room-temperature butter and eggs, fold ingredients gently, and include sour cream or yogurt in the batter. Avoid overbaking; remove when a toothpick shows a few moist crumbs. Brushing layers with a little simple syrup boosts moisture.

Can I use natural peanut butter in the recipe?

Yes — natural peanut butter can be used but stir it well first to reincorporate oils. Texture and flavor may be slightly different; you might need to chill frosting longer because natural peanut butter can be softer and runnier.

Is it possible to make the cake dairy-free or vegan?

You can use plant-based milk, vegan butter, and a yogurt substitute for dairy-free results. For vegan eggs, try flax or chia “eggs” (1 tbsp ground seed + 3 tbsp water per egg) but texture will vary and may be slightly denser.

How long does the frosted cake stay fresh at room temperature?

Because of the dairy in the frosting, keep the cake refrigerated if not serving within 2 hours. At room temperature, it’s safest for up to 2 hours; refrigerated, it stays fresh 3–4 days.

Can I make cupcakes instead of a layer cake?

Yes — bake batter in a cupcake tin at 350°F (175°C) for 16–20 minutes. Reduce bake time and test with a toothpick. Frost cooled cupcakes with the same peanut butter frosting.

How do I prevent the frosting from being gritty?

Sift powdered sugar before adding and beat the frosting well to dissolve any lumps. Use softened butter (not melted) and add milk gradually until smooth for a creamy, non-grainy texture.

What can I do if my cake sinks in the middle?

Sinking usually means underbaking or opening the oven early. Check oven temperature with a thermometer, avoid opening the door during baking, and test for doneness with a toothpick before removing.

Conclusion

This peanut butter cake delivers comforting, nutty flavor with soft layers and a silky peanut butter frosting — versatile for celebrations or everyday indulgence. With simple swaps and clear storage tips, it’s an easy cake to customize and enjoy.