Ingredients
Method
The Batter Architecture
- Preheat the oven to 350°F. Line a standard 12-cup metal muffin pan with high-quality paper liners.
- In a medium bowl, whisk together the all-purpose flour, baking powder, and kosher salt to ensure the leavening agents are perfectly distributed.
- In the bowl of an electric stand mixer, cream the softened butter and granulated sugar together on medium-high speed until pale and highly fluffy, about 3 minutes.
- Add the eggs one at a time, mixing thoroughly after each addition. Stir in the pure vanilla extract and the whole milk until unified.
- Reduce the mixer speed to low. Gradually pour in the dry flour mixture, mixing only until just combined to prevent overworking the gluten.
- Use a heavy-duty ice cream scoop to divide the batter evenly among the 12 muffin cups.
- Bake for 20 minutes, or until a wooden tester inserted into the center of a cupcake comes out perfectly clean. Cool in the pan for 10 minutes before transferring to a wire rack to cool completely.
The Core Extraction & Filling
- In a medium bowl, use an electric hand mixer to beat the ¼ cup softened butter, chocolate-hazelnut spread, and ½ cup confectioners' sugar until perfectly smooth and glossy.
- Once the cupcakes are completely cool, use a small melon baller or a sharp paring knife to carefully scoop out the top-center of each cupcake (save the small cake "plugs").
- Transfer the hazelnut filling to a pastry bag fitted with a plain tip. Squeeze approximately 1 tablespoon of the rich filling directly into the hollowed core of each cupcake. Gently place the reserved cake plug back on top to seal the center.
The Emulsified Frosting
- In a large mixing bowl, use an electric mixer to beat the ½ cup softened butter, smooth peanut butter, and softened cream cheese until seamlessly combined and fluffy.
- Gradually add the 2 cups of confectioners’ sugar in batches, beating on low speed until smooth. (If the frosting is too stiff, add 1 tablespoon of milk to achieve a spreadable, silky consistency).
- Using an offset spatula or a piping bag fitted with a large star tip, generously frost the top of each sealed cupcake, fully covering the core, and serve.