Reese’s Peanut Butter Cup Brownies
These chocolate peanut butter brownies are a fun twist on a chocolate brownie, stuffed with a layer of peanut butter cup goodness.
These brownies have one job: making sure there’s a Reese’s peanut butter cup in every piece. Not chopped, not scattered, but one whole cup, distinctly layered, in every single slice.
Most recipes end up with the cups melted into the bottom. After some serious recipe testing, here’s what makes this recipe work better:
- A thicker batter that keeps each cup right where you place it
- An 8×8 pan that gives you even layers above and below each cup
- Removing the brownies from the oven before they overbake
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When I was testing this recipe, I didn’t change the ingredient list once. What made the difference was how I handled the batter and set the cups.
Before You Start – Read This
The pan prep sequence here matters more than it looks. I spray the pan first, then lay in the parchment, then spray again. The batter is thick enough to drag the parchment out of place when you start spreading it, which throws off the grid before anything is even set. That extra spray keeps it anchored.
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When Karen, my recipe tester, was trying out this recipe the cups kept sliding out of place until she started pressing them in lightly before adding the top batter.
The batter is thicker than most brownies. It doesn’t settle on its own, and that’s usually where things go sideways. If you rush it, the cups shift and the top layer ends up uneven. When I take my time here, it covers cleanly.
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The texture is different from my peanut butter brownies, which use a thinner batter and don’t have that layered center.
What Can Go Wrong (And How To Fix It)
I pull them at 25 minutes. The center still looks slightly soft but not wet, and that’s exactly where it should be. Both times I tested them, going to 30 minutes pushed the edges too far.
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I let them cool completely before cutting. The peanut butter is still fluid while they’re warm and will drag through the brownie if you slice too soon. If I want especially clean cuts, I’ll chill the slab for 30 to 60 minutes before slicing. That firms everything up just enough to keep the layers clean.
I lift the whole slab out with the parchment before cutting. If you cut in the pan, the edges compress and the layers start to pull. That’s what keeps the slices clean. I use a long, sharp knife and cut straight down in one motion instead of sawing.
Wiping the blade between cuts makes a big difference here, especially with the peanut butter layer. The same approach works with other candy too. My Snickers brownies and Rolo stuffed brownies use this same layered method.
