Donut Loaves

Chocolate Peanut Butter Cup Donut Loaf

A soft donut loaf filled with chopped chocolate, topped with peanut butter cup streusel, melted peanut butter cups, and a little flaky salt.

Prep

25 min

Bake

45 min

Total

2 hr

Yield

One 9x5-inch loaf

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A note from my kitchen

Before you bake this

This loaf is for the peanut butter cup people. It is full of chocolate, peanut butter, crisp streusel, and just enough salt to keep every bite balanced.

The topping is generous on purpose. The chopped peanut butter cups soften over the warm loaf, while the streusel keeps a little crunch.

It is rich, soft, and very easy to keep going back to, especially if chocolate and peanut butter is your thing.

Save me a slice ;)

Thinking out loud

The Halloween Candy I Still Choose

The cravings, questions, and running commentary behind this bake.

Chocolate Peanut Butter Cup Donut Loaf with a thick slice cut from the finished loaf — A slice for now, with the rest headed to the freezer for later.

No matter how forgetful you may be, you always remember your favorite Halloween candy. Mine was Reese's peanut butter cups. This donut loaf is my favorite thing I have created with them - and yes, Reese's makes an option I can use.

My husband is not a big peanut butter cup fan. He is more of a Butterfinger guy, so when I make this loaf, I get excited knowing I might have it to myself. The Maldon salt on top makes the whole thing feel a little more grown-up.

I freeze slices, warm them up, and serve them with ice cream. If you ever freeze this loaf, try a big bite of streusel straight from the freezer. Honestly, I should make that streusel on its own - and I hope you agree.

Read this first

The quick notes.

Flavor

Chocolate, peanut butter cups, vanilla crumb, and flaky salt.

Texture

Soft loaf, crisp streusel, melty candy pieces, and a clean-slicing center.

Best moment

The warm peanut butter cups softening over the streusel after baking.

Ingredient notes

Key ingredients

Mini peanut butter cups

Chop them into a mix of small and medium pieces. Smaller pieces tuck into the streusel, while larger pieces on top melt into glossy pockets after baking.

Creamy peanut butter

A small spoonful in the streusel brings peanut butter flavor into the crumb topping without making it greasy or heavy.

Chopped chocolate

Chopped chocolate gives softer, uneven pockets through the loaf. It feels more generous than chips and keeps the chocolate from reading flat.

Maldon flaky sea salt

The flaky salt is not just garnish here. It cuts the sweetness from the candy and makes the peanut butter and chocolate taste fuller.

Coarse sanding sugar

Modern Mountain Baking Company White Sparkling Sugar is my go-to sanding sugar. I get it on Amazon, and it adds a crisp, sparkly finish without melting into the top.

Optional ingredient notes

Use what you have on hand

Curious what I used? These are the exact products I reached for while developing this recipe.

Yogurt

Plain unsweetened yogurt

Plain unsweetened yogurt adds moisture, acidity, and body so the crumb bakes up tender without tasting tangy.

Forager Unsweetened Plain Yogurt

Milk

Milk affects how smoothly a batter, filling, or frosting comes together. Soy milk and Ripple tend to emulsify well because their protein and fat help create a creamy, cohesive finish.

Silk Original Unsweet

Butter sticks

Use butter sticks for buttercream and fillings that need to hold their shape.

Country Crock Plant Butter Sticks

Testing notes

Why this works

What binds the loaf without eggs

The yogurt, flour, cornstarch, and sugar work together to give the loaf structure. Yogurt adds moisture and body, while the flour and starch set as the loaf bakes, so eggs are not needed for this style of soft donut loaf.

Why there is apple cider vinegar

The vinegar reacts with the baking soda and helps give the loaf lift. It also balances the sweetness a little. You should not taste vinegar in the finished loaf.

Why room-temperature ingredients matter

Room-temperature yogurt and milk blend more smoothly with the oil and sugar. This helps the batter come together evenly, which gives the loaf a softer crumb and a more even bake.

Why the streusel is chilled

Chilling the streusel keeps the butter cold, so the crumbs hold their shape instead of melting straight into the batter. That is what gives the top its crisp, bakery-style texture.

Why this loaf rests in the pan

This loaf only needs a shorter 15-minute pan rest because the topping goes on while the loaf is still warm. That rest still matters: it lets the structure firm up enough to move while keeping the soft, cake-donut-style center.

Why the loaf rests before slicing

A 30-minute chill is enough to help the center and topping set cleanly. If you want a warmer slice, you can let it rest on the counter instead; I prefer the chill, then bringing slices back to room temperature, because the loaf feels set in all the best ways.

How it comes together

Chocolate Peanut Butter Cup Donut Loaf: loaf ingredients

Chocolate Peanut Butter Cup Donut Loaf: streusel ingredients

Chocolate Peanut Butter Cup Donut Loaf: streusel cups

Chocolate Peanut Butter Cup Donut Loaf: batter pan

Chocolate Peanut Butter Cup Donut Loaf: streusel pan

Chocolate Peanut Butter Cup Donut Loaf: baked pan

From Instagram

Watch the reel

Watch the chocolate donut loaf get layered with peanut butter cup streusel and finished with chocolate glaze.

Open the reel

Small things that matter

Tips for the best loaf

Keep the peanut butter cups roughly chopped so the topping has visible pieces after baking.

Do not overmix once the dry ingredients go in. Stop when no dry streaks remain.

This loaf only needs about 15 minutes in the pan before transferring. The extra chopped peanut butter cups go on while the loaf is still warm so they soften slightly.

Chill the loaf for about 30 minutes before slicing so the chocolate and peanut butter topping have time to set cleanly, or let it set on the counter if you want it warmer.

Let chilled slices sit at room temperature before serving so the crumb softens again.

Chocolate Peanut Butter Cup Donut Loaf: overhead pan

Before you slice

Texture and serving notes

This loaf slices best after about 30 minutes in the refrigerator, then tastes best once the slices have come back toward room temperature.

The top should stay textured, with the peanut butter cups softened into the streusel instead of fully melted away.

If the slices feel firm straight from the refrigerator, give them a little time on the counter.

Keep it good

Storage

Fridge

Store covered in the refrigerator for up to 4 days.

Fridge

For the best texture, let chilled slices come back toward room temperature before serving.

Recipe FAQ

Questions that come up

Can I make this recipe gluten-free?

I have not tested this recipe with gluten-free flour, so I cannot guarantee the same texture, rise, or structure. If you would like to experiment, a cup-for-cup (1:1) gluten-free baking blend intended to replace all-purpose flour is the best place to start. Results may differ from the recipe as written.

Can I use Greek yogurt in this donut loaf?

I do not recommend it. Greek yogurt is much thicker and contains less moisture than the plain unsweetened yogurt used here, which can make the batter too thick and the finished loaf denser or drier. Use regular plain unsweetened yogurt for the texture this recipe was designed to have.

Can I substitute sour cream for the yogurt?

Yes, regular full-fat sour cream is the closest substitute. Replace the plain unsweetened yogurt with the same amount by weight. Sour cream is thicker and higher in fat, so the batter may be slightly thicker and the finished loaf a little richer and denser than the version I tested with yogurt. Avoid reduced-fat or fat-free sour cream, which can behave differently.

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