Decadent Butterfinger Cupcakes

The coffee shop around the corner from my first apartment used to make these outrageous peanut butter cupcakes, and I became mildly obsessed with figuring out how they got that distinct candy bar crunch woven through every bite. After months of experimentation, I finally cracked the code, and now these cupcakes have become legendary among my friends who request them for every birthday and celebration. There is something magical about the combination of warm chocolate cake, cool peanut butter filling, and that signature Butterfinger brittle that makes people's eyes light up.

I brought a batch to my sister's baby shower last spring, and her mother in law cornered me in the kitchen for twenty minutes demanding the recipe. She swore she had tried every peanut butter cupcake recipe in existence and none compared to what she called the perfect ratio of sweet to salty. Watching guests discover the peanut butter center for the first time became its own form of entertainment, with several people insisting I must have purchased them from a high end bakery.

Ingredients

• All purpose flour: Provides the structure for these rich cupcakes while keeping the crumb tender
• Unsweetened cocoa powder: Use a high quality brand like Ghirardelli for the deepest chocolate flavor
• Granulated and light brown sugar: The combination creates the perfect sweetness level and adds slight caramel notes from the brown sugar
• Unsalted butter: Always use room temperature butter for the frosting to achieve that silky smooth consistency
• Hot brewed coffee: This secret ingredient intensifies the chocolate flavor without making the cupcakes taste like coffee
• Creamy peanut butter: Jif or Skippy work beautifully here because they create a smoother filling than natural peanut butter
• Butterfinger candy bars: Buy an extra bar because you will absolutely snack on them while crushing
• Heavy cream: This makes the frosting luxuriously thick and pipeable

Instructions

Bake the chocolate cupcakes:

Preheat your oven to 350°F and line a 12 cup muffin tin with liners. Whisk together the dry ingredients in one bowl and the wet ingredients in another, then combine them just until no flour streaks remain. Fill each liner about two thirds full and bake for 16 to 18 minutes until a toothpick comes out clean.

Prepare the peanut butter surprise:

Beat the peanut butter and softened butter until completely smooth, then gradually add the powdered sugar and milk until you have a creamy pipeable filling. Let it rest at room temperature while the cupcakes cool.

Core and fill the cupcakes:

Once the cupcakes are completely cool, use a small knife or cupcake corer to remove the center of each one, going about one inch deep. Fill each cavity with a generous amount of peanut butter filling.

Make the Butterfinger frosting:

Beat the butter until fluffy, then add the powdered sugar, peanut butter, cream, and vanilla. Mix until light and creamy, then gently fold in the finely crushed Butterfinger pieces until just combined.

Frost and garnish:

Pipe or spread the frosting generously over each filled cupcake, then immediately sprinkle with the coarsely chopped Butterfinger pieces so they stick to the frosting.

Save

My husband who claims he does not even like desserts that much ate four of these the first time I made them. Now whenever I suggest making cupcakes for a gathering, he immediately asks if these are on the menu. Something about that combination of chocolate and peanut butter with the candy bar crunch just makes people abandon all self control.

Making Ahead

You can bake the cupcakes one day in advance and store them in an airtight container at room temperature. The frosting and filling can also be prepared ahead and kept refrigerated separately. Just bring the frosting to room temperature and give it a quick stir before frosting.

Storage Secrets

These cupcakes actually taste better on day two because the flavors have time to meld together. Store them in the refrigerator in an airtight container, but bring them to room temperature for 30 minutes before serving. The texture is significantly better when they are not ice cold.

Serving Suggestions

These cupcakes make an incredible impression at birthday parties potlucks or holiday gatherings. They are rich enough that one per person is plenty, so a batch of twelve goes a long way. Consider pairing them with cold milk or hot coffee to balance the sweetness.

• Use a large star tip for bakery style frosting swirls
• Press a small Butterfinger chunk into the top of each frosted cupcake for extra visual appeal
• Place a piece of parchment paper under each one when serving to catch any falling candy pieces

Save

Every time I serve these cupcakes, someone inevitably asks for the recipe. Watching people discover that hidden peanut butter center never gets old.

Recipe FAQs

→ Can I make these cupcakes ahead of time?

Yes, bake and cool the cupcakes up to one day in advance. Store in an airtight container at room temperature. Fill and frost within 24 hours of serving for best texture.

→ What's the best way to crush Butterfinger bars?

Place unwrapped bars in a sealed plastic bag and crush with a rolling pin or meat mallet. For finely crushed pieces, pulse in a food processor using short bursts.

→ Can I use natural peanut butter instead of creamy?

Creamy commercial peanut butter works best for smooth filling and frosting. Natural varieties may separate and affect texture. If using natural, stir thoroughly and consider adding extra powdered sugar.

→ How do I store leftover filled cupcakes?

Keep in an airtight container at room temperature for up to 3 days. The peanut butter filling helps maintain moisture. Avoid refrigeration as it can dry out the cake.

→ Can I substitute the coffee in the batter?

Hot water works as a substitute, though coffee intensifies the chocolate flavor. For a mocha variation, use espresso instead of regular brewed coffee.

→ What's the purpose of removing cupcake centers?

Creating a cavity allows generous peanut butter filling inside each cupcake. Use a small knife, apple corer, or specialized cupcake corer to remove about one inch of cake.