Peanut Butter Brownie Cups

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There’s something truly magical about the combination of rich chocolate and creamy peanut butter, and that’s exactly what inspired these Peanut Butter Brownie Cups. I’ve always been a huge fan of brownies, but when I started swirling peanut butter into the mix and topping them with more chocolate chips, it changed the game. These cups are soft, gooey, indulgent, and hit all the right notes of sweet and salty.

I made these for a weekend get-together, and they didn’t last more than a few minutes. The brownie base is fudgy and dense, while the peanut butter layer adds a melt-in-your-mouth creaminess that makes each bite irresistible. And when the warm chocolate chips on top begin to slightly melt into that peanut butter layer? Absolute heaven.

Why You’ll Love This Peanut Butter Brownie Cups Recipe

This recipe brings two all-time favorites—brownies and peanut butter—into one decadent dessert that’s easy to make and even easier to fall in love with. Whether you’re making them for a party, a sweet gift, or a weeknight indulgence, these brownie cups are a guaranteed hit. They’re also perfect for portion control… if you can stop at just one!

What Kind of Peanut Butter Should I Use?

Creamy peanut butter works best here. It blends smoothly into the batter and gives you that soft, luscious texture on top. If you prefer a bit of crunch, chunky peanut butter can add a fun twist, but keep in mind it’ll change the overall consistency slightly. Natural peanut butter with oil separation isn’t ideal unless it’s thoroughly stirred.

Options for Substitutions

• Peanut Butter: Swap for almond or cashew butter if you’re avoiding peanuts.
• Flour: A 1:1 gluten-free flour blend works well for a gluten-free version.
• Chocolate Chips: Use semi-sweet, milk chocolate, or even white chocolate chips depending on your mood.
• Egg Substitute: A flax egg (1 tbsp ground flax + 3 tbsp water) can replace a regular egg if needed for a vegan version.
• Sugar: Coconut sugar or monk fruit sweetener can be used to reduce refined sugar.

Ingredients for This Peanut Butter Brownie Cups Recipe

• Unsalted Butter: Gives richness and moisture to the brownie base.
• Granulated Sugar: Sweetens the brownies and helps create the perfect chewy texture.
• Brown Sugar: Adds depth of flavor and extra moisture.
• Eggs: Provide structure and richness to the batter.
• Vanilla Extract: Enhances all the flavors with a warm undertone.
• All-Purpose Flour: The foundation for the brownie structure.
• Cocoa Powder: Gives that intense chocolatey base.
• Salt: Balances the sweetness and enhances the chocolate flavor.
• Peanut Butter: Creates the creamy, nutty layer on top; adds saltiness and richness.
• Powdered Sugar: Helps thicken the peanut butter topping without making it gritty.
• Milk: Loosens the peanut butter mixture to make it spreadable.
• Chocolate Chips: Melt into the peanut butter and add bursts of chocolate in every bite.

Step 1: Prep Your Pan and Oven

Preheat your oven to 350°F (175°C) and line a muffin tin with cupcake liners or lightly grease with non-stick spray. This makes removal easy and ensures no sticking.

Step 2: Make the Brownie Batter

In a microwave-safe bowl, melt the butter. Stir in granulated sugar and brown sugar until well combined. Whisk in eggs and vanilla extract. In another bowl, whisk together flour, cocoa powder, and salt. Add the dry ingredients to the wet and mix until just combined. Don’t overmix or the brownies will be too cakey.

Step 3: Fill and Bake

Spoon the brownie batter evenly into the muffin cups, filling each about 3/4 full. Bake for 15-18 minutes until the tops are set but still slightly soft in the center. Let them cool in the tin for 10 minutes, then transfer to a wire rack.

Step 4: Make the Peanut Butter Topping

While the brownie cups cool, mix together peanut butter, powdered sugar, and milk in a bowl until smooth and creamy. You want it spreadable, not runny. Adjust milk if needed.

Step 5: Frost and Finish

Once the brownie cups are mostly cool, spread a generous dollop of the peanut butter mixture on top of each one. Press a few chocolate chips into the top while the frosting is still soft so they stick. Let them sit for a few minutes or chill briefly to set the topping.

Step 6: Serve or Store

Enjoy these warm, room temperature, or even chilled. Each way offers a slightly different (but equally delicious) texture and experience.

How Long to Prepare the Peanut Butter Brownie Cups

Preparing these Peanut Butter Brownie Cups takes roughly 35 to 40 minutes from start to finish. That includes about 15-18 minutes of baking time, and the rest for prepping and cooling. These are great when you need an impressive dessert without investing hours in the kitchen.

Prep Time: Most of the preparation—melting butter, mixing the brownie batter, and creating the peanut butter topping—takes about 15-20 minutes. If you’re organized, you can even get the topping ready while the brownies bake. It’s quick, simple, and doesn’t require fancy equipment.

Baking + Cooling Time: Baking time ranges between 15 to 18 minutes. Allow an additional 10 minutes to cool in the muffin pan and a few minutes more on a wire rack before topping with peanut butter.

Tips for Perfect Peanut Butter Brownie Cups

• Let the brownie base cool before adding the peanut butter topping to prevent melting.
• Don’t overmix the brownie batter—stir until just combined to keep the texture fudgy.
• Use a cookie scoop or tablespoon to evenly portion batter into muffin tins.
• Chill the peanut butter topping briefly for easier spreading.
• Sprinkle sea salt on top for a sweet-salty finish.

Watch Out for These Mistakes While Cooking

• Overbaking: These cups should be just set, not dry. Keep an eye around the 15-minute mark.
• Skipping liners or greasing: Brownies will stick if you forget this step.
• Using natural peanut butter without mixing well: It can separate and affect texture.
• Adding topping too soon: Wait for brownies to cool to avoid a melting mess.
• Using too much flour: Measure correctly—too much can make them cakey instead of fudgy.

What to Serve With Peanut Butter Brownie Cups?

1. A Glass of Cold Milk

A classic pairing. The richness of the brownie and peanut butter goes perfectly with milk.

2. Scoop of Vanilla Ice Cream

Warm brownie cups topped with cold ice cream? The contrast is unbeatable.

3. Fresh Strawberries

Add a fresh, fruity element to balance the richness.

4. Whipped Cream with Crushed Peanuts

Light and airy, whipped cream adds a cloud-like contrast, while peanuts add crunch.

5. Coffee or Espresso

Perfect for a dessert moment, especially when served slightly warm.

Storage Instructions

Room Temperature: Store the brownie cups in an airtight container at room temperature for up to 2 days. Keep them in a cool area away from sunlight.

Refrigerator: For longer storage, refrigerate them for up to 5 days. The peanut butter topping will firm up slightly but still taste amazing.

Freezer: You can freeze the brownie cups (without the topping) for up to 2 months. Thaw overnight in the fridge, then top with fresh peanut butter mixture when ready to serve.

Estimated Nutrition (per serving)

• Calories: 280
• Protein: 5g
• Fat: 18g
• Saturated Fat: 7g
• Carbohydrates: 28g
• Sugar: 20g
• Fiber: 2g
• Sodium: 120mg

Frequently Asked Questions

How do I know when the brownie cups are done?

The tops should look set, and a toothpick inserted in the center should come out with a few moist crumbs, not wet batter.

Can I use store-bought brownie mix?

Yes! If you’re short on time, a boxed mix works well. Just follow the box instructions and portion into muffin tins.

Do these need to be refrigerated?

Not right away, but if you have leftovers beyond 2 days, it’s best to refrigerate them.

Can I make them nut-free?

Absolutely! Use sunflower seed butter or cookie butter as a substitute.

Are these freezer-friendly?

Yes, freeze without the topping and add it fresh after thawing for the best texture and flavor.

Conclusion

Peanut Butter Brownie Cups are the ultimate dessert mash-up. They’re rich, fudgy, creamy, and just the right amount of indulgent. Whether you’re baking for a party, gifting them, or just treating yourself after a long day, they always deliver. Keep a batch ready to go, and you’ll always have a sweet treat that’s a guaranteed crowd-pleaser.

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