Old Fashioned Peanut Butter Cake
This Old Fashioned Peanut Butter Cake is a true southern favorite. Moist and flavorful, it’s topped with rich peanut butter glaze.
I served this cake at our Mother’s Day brunch this year. After the first bite, my mom immediately wanted to know where I got the recipe. It was familiar. No wonder – it’s one of those southern mainstays that makes the rounds in community and church cookbooks. I found it in the latter, although I had never heard of – or attended – the church that produced it. Someone must have gifted the book to me long ago.
The cake is loaded with peanut butter flavor but it’s not overwhelming. Yes – it’s rich. However, lighter than you might expect. My mother-in-law, who has food allergies was tempted enough to have just one bite. Her mother used to make this cake. When she tasted it and closed her eyes, I could see the flavor was a fond memory.
Peanut butter cake batter.
To get started, all of the dry ingredients go into a big bowl, including the sugar. In baking, sugar is considered a wet ingredient because it liquifies in the oven, but – we’ll call it dry here, just this once. Whisk everything together and set aside.
Next, put a whole cup of butter, water, and just 1/4 cup of creamy peanut butter into a saucepan. Stir and bring the mixture to a boil on the stove top. When the mixture boils, pour it into the flour mixture and combine it using a hand mixer. Low speed works best. Mix it until just combined and set aside.
Mix together egg, buttermilk, and vanilla extract in a large measuring cup, and then add it to the peanut butter batter. Beat until everything is well combined and consistent. The batter will be a little viscous and syrupy.
Bake until golden.
Pour the cake batter into a greased 13×9 inch pan and bake for 30-35 minutes. My cake took about 35 minutes. But you’ll know it’s done when the exterior is deep brown and a toothpick tester inserted near the center comes out clean.
Peanut butter fudge glaze.
Cool the cake for about 10 minutes before adding the glaze. And. Oh my goodness gracious. The glaze really tastes like peanut butter fudge. To make it, boil butter, peanut butter, and milk, on stove top. Then removed to cool slightly. Beat in powdered sugar and vanilla extract.
Because both cake and glaze are warm, the glaze spreads into a thin even layer on the cake. It’s the perfect amount of sweet.
Add some toppings – or don’t!
I served this cake without any extra toppings the first time I made it, but for this blog post I added some crushed peanut butter cookies (Nutter Butters). And a few honey roasted peanuts. It’s good both ways! If you decide to add some toppings, be sure to get those on there as soon as the glaze is poured because it sets up quickly!
It’s hard to believe this cake has only 1/4 cup of creamy peanut butter in the cake batter, and another 1/4 cup in the frosting. Yep, just 1/2 cup total peanut butter in the whole cake. This amount imparts bold flavor without making the cake heavy or too thick. It’s just so good, and it stays moist for days at room temperature. My husband’s favorite way to eat it is heated in the microwave and topped with vanilla ice cream. Which I had to try for myself, and I must say – it is really nice.
Related recipe: Peanut Butter Pie
Old Fashioned Peanut Butter Cake
Heather Baird
This peanut butter cake is a southern favorite. It has bold peanut butter flavor without being heavy or to sweet. The peanut butter glaze has just the right sweetness, and tastes like peanut butter fudge. I found this recipe in a church cookbook, with the author’s note: “I made this for a church get-together and had many requests for the recipe…so will you!” (So cute!)I added some crushed peanut butter cookies and honey roasted peanuts on top of this cake, but these toppings are optional. The cake is quite good without them. The cake is baked in a 13×9 inch dish; however, you can also bake it as a 15×10 inch sheet cake. See the recipe notes for these instructions.
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Prep Time 30 minutes minsCook Time 40 minutes minsTotal Time 1 hour hr 10 minutes mins
Course DessertCuisine American
Servings 12
Equipment1 13×9 inch baking dish
Ingredients US CustomaryMetric Peanut butter cake2 cups all-purpose flour2 cups granulated sugar1/2 teaspoon salt1 teaspoon baking soda1 cup unsalted butter1 cup water1/4 cup creamy peanut butter such as Jif2 eggs well beaten1/2 cup buttermilk1 teaspoon vanilla extractPeanut butter glaze1/2 cup unsalted butter1/4 cup creamy peanut butter such as Jif1/3 cup whole milk3 1/2 cups confectioners’ sugar 16 oz. box1 teaspoon vanilla extract8 Nutter Butter peanut butter cookies optional2 tablespoons honey roasted peanuts optional
Instructions Peanut butter cakePreheat the oven to 350°F. Coat a 13×9 inch pan with nonstick cooking spray.In a large mixing bowl, whisk together the flour, sugar, salt, and baking soda. Set aside.Combine the butter, water, and peanut butter in a saucepan and place over medium-high heat. Stir occasionally and bring to a boil. When the mixture boils, pour it into the flour mixture. Beat together using a hand mixer on low speed until just combined.In a separate bowl or large liquid measure, whisk together the eggs, buttermilk, and vanilla extract. Pour the mixture into the peanut butter batter and mix with an electric hand mixer until smooth.Pour the batter into the prepared pan and bake for 30-35 minutes, or until the cake is well browned and a toothpick tester inserted near the center comes out clean.Remove to a cooling rack and let the cake cool in the pan about 10 minutes. Meanwhile prepare the peanut butter glaze.Peanut butter glazeCombine the butter, peanut butter, and milk in a saucepan. Set over medium-high heat and cook until the mixture boils, stirring occasionally. When the mixture boils, remove it from the heat and mix in the confectioners’ sugar using an electric hand mixer. Beat until smooth and lump-free. Pour the glaze over the warm cake and spread evenly. Add toppings immediately, if using.Serve the cake warm or at room temperature. Cover leftovers with plastic wrap and store at room temperature. This cake stays moist for days after making it.
NotesToppings: If adding toppings to the cake, have them ready to hand right after pouring the glaze on the cake. The glaze sets quickly, and if you wait too long, the toppings won’t stick.
Sheet cake version: Use a 15×10 inch jelly roll pan in which to bake the cake batter. Reduce the bake time to 15-20 minutes. Glaze as directed. This version is sometimes called “Peanut Butter Texas Sheet Cake”. The cake is good baked both ways, but my family prefers the fluffier 13×9 inch version.
Keyword creamy peanut butter, old fashioned peanut butter cake, peanut butter cake batter, peanut butter glaze, peanut butter sheet cake
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