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Peanut Butter Cup Lava Cupcakes

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These Peanut Butter Cup Lava Cupcakes are decadent, fudgy chocolate cupcakes with a molten peanut butter center. Each one hides a mini peanut butter cup inside that melts as it bakes, creating a gooey, lava-like surprise. Perfect for parties, Valentine’s Day, or a cozy night in!

Ingredients

Scale
  • 1/2 cup unsalted butter

  • 4 oz semi-sweet baking chocolate, chopped

  • 2 large eggs

  • 2 large egg yolks

  • 1/3 cup granulated sugar

  • 1/4 cup all-purpose flour

  • 1/4 tsp salt

  • 1 tsp vanilla extract

  • 6 mini Reese’s peanut butter cups, unwrapped

  • Optional toppings: whipped cream, extra peanut butter drizzle, chopped peanuts

Instructions

  1. Preheat Oven:

    • Preheat oven to 425°F (220°C).

    • Grease a 6-cup muffin tin or line with parchment paper liners.

  2. Melt Chocolate and Butter:

    • In a microwave-safe bowl or saucepan, melt butter and chocolate together until smooth.

    • Let cool slightly.

  3. Mix the Batter:

    • In a mixing bowl, whisk together eggs, yolks, sugar, and vanilla until slightly thickened and pale.

    • Slowly stir the melted chocolate into the egg mixture.

    • Sift in flour and salt, then fold gently until just combined.

  4. Assemble the Cupcakes:

    • Spoon a heaping tablespoon of batter into each muffin cup.

    • Place one mini Reese’s cup in the center of each.

    • Top with remaining batter, making sure the peanut butter cup is fully covered.

  5. Bake:

    • Bake for 10–12 minutes, or until the edges are set but the centers are still soft.

    • Let cool for 2–3 minutes in the pan, then carefully remove.

  6. Serve:

    • Serve warm for the gooey lava effect!

    • Top with whipped cream, a drizzle of peanut butter, or a sprinkle of powdered sugar if desired.

Notes

  • Serve immediately for best “lava” texture.

  • You can prepare the batter ahead and chill—just bring to room temperature before baking.

  • For even more chocolate, stir a few chocolate chips into the batter.