This was a birthday cake made for someone special.

He has a soft spot for peanut butter and chocolate desserts and will almost always pick that flavor when presented with a case full of cupcakes. Growing up in Philadelphia, this choice also felt like a quiet nod to the classic Peanut Butter Kandy Kake, though we usually avoid those because of trans fats. The cake followed his requested birthday dinner of a Hot and Toasty Steak Sandwich, so the meal had an accidental Philly theme to it.

The cake starts with yellow cake, and that itself is a long story. I’ve spent years testing and tweaking yellow cake recipes to find the ideal balance for this classic. After trying many versions, I finally found one that consistently delivered a lovely buttery flavor and a pleasant crumb. That recipe came from Mel of Mel’s Kitchen Cafe; her “perfected yellow cake” matched what I was looking for and has become my go-to. I’ve baked it multiple times with excellent results.

For this birthday cake I used Mel’s yellow cake as the base and developed my own peanut butter filling to meet the birthday request: creamy, light, and not overpoweringly peanut buttery. The filling is smooth and balanced, giving a pleasant peanut butter taste without dominating the cake.

The ganache is the star of the cake. My original plan was to pour it just enough to create decorative drips, but it turned out more fluid than expected and ended up covering the entire cake. While that made the process a bit messy—I had to move the drenched serving plate to let the excess drip off—the result was worth it. The ganache isn’t overly sweet, so it balances the cake and complements the peanut butter filling, setting into a creamy, fudgy coating.

Leftover ganache keeps well and is delicious on graham crackers, vanilla wafers, fruit, or simply eaten by the spoonful. For best results when pouring ganache, prepare and set it on a rack over a tray so you don’t have to move the cake while the ganache is still runny.

This cake came together beautifully: yellow cake layers filled with a light, creamy peanut butter filling and finished with a glossy dark chocolate ganache. It’s a harmonious combination of textures and flavors—moist cake, smooth filling, and silky chocolate—that made the birthday celebration special.

Here’s a toast to Hot and Toasty Steak Sandwiches, a Tandy Birthday Cake, and Philly—the birthplace of my true love. Happy birthday, love!

A Tandy Birthday Cake

Yield:
One 9″ two layer cake

Ingredients

1 baked and cooled, 9″ two layer yellow cake

For the peanut butter filling:

1 cup creamy peanut butter
1 stick unsalted butter, softened
1/4 teaspoon salt, rounded, or to taste
1/2 cup heavy cream
1 1/2 teaspoons vanilla
1 1/2 cups powdered sugar

For the ganache:

3 Tablespoons corn syrup
6 ounces heavy cream
12 ounces dark chocolate, chopped into small pieces
1/2 teaspoon vanilla extract

Instructions

For the ganache:

In a small saucepan, combine the corn syrup and heavy cream.
Bring to a simmer and add the chocolate. Stir until smooth.
Remove from heat and add the vanilla. Set the ganache aside while you prepare the filling.

For the peanut butter filling:

Beat butter and salt until fluffy, about 2 minutes. Add peanut butter and continue beating for another minute or two.
Add cream, vanilla and sugar and beat until well combined.
If using a stand mixer, change from the paddle attachment to the whisk attachment and beat until fluffy. If using a hand held, continue to beat until fluffy.
Place bottom cake layer, flat side down, on a rack on top of a tray lined with wax paper or foil to catch the drippings.
Spread the peanut butter filling evenly on top of the bottom cake layer, leaving a one inch border to allow for additional spreading.
Place the top layer, flat side up, on top of the filling and gently press until the filling spreads to the edge of the cake. You may need to use a knife to scrape off excess and to insure that the filling is even with the sides of the cake.
Pour ganache over all, spreading evenly over all sides of the cake. Let stand for a few minutes to set.
Remove cake to serving platter and store in refrigerator until serving.
When ready to serve, use a knife dipped in hot water,then wiped with a towel, to make clean cuts.

Notes

Store cake, lightly covered, in refrigerator.

For this recipe, the yellow cake comes out with a slightly tighter crumb than Mel’s original, partially due to the pressing step during filling and partially because cake tends to get a bit denser when it’s refrigerated.

You can also bake this as three 8″ layers and have two thinner layers of peanut butter filling.

Cake recipe from Mel’s Kitchen

Ganache adapted from a classic ganache recipe