Sunlight slanting through a cramped street stall in Buenos Aires, a scoop of peanut butter stealing the show — that’s the vibe these blondies bring. Think of them as a passport stamped with peanut-sweet nostalgia and a little cinematic crunch. Bite once and you’re halfway through a globe-trotting montage.
Why make this recipe
Because some desserts are uncomplicated love letters: one bowl, pantry-friendly ingredients, and a buttery-peanut kiss that reads like comfort food on holiday. These blondies are fast, forgiving, and loud in flavor — perfect for when you want bold results with minimal fuss.
How to make Peanut Butter Blondies
This is no-nonsense, one-bowl theater. Melted butter meets brown sugar for a caramel base, an egg and vanilla bring warmth, and peanut butter turns everything golden and sticky. Fold in flour and salt, bake until just set, and you’ve got tray-baked sunshine — chewy, slightly crumbly edges, and a center that begs for a coffee close-up.
Ingredients:
- 1/2 cup unsalted butter, melted
- 1 cup light brown sugar
- 1 large egg
- 1 teaspoon vanilla extract
- 1/2 cup peanut butter
- 1/4 teaspoon salt
- 1 cup all-purpose flour
Directions:
Preheat oven to 350 degrees and line an 8×8 baking dish with parchment paper or aluminum foil and lightly grease with cooking spray. In a large bowl, combine the melted butter and light brown sugar, mixing thoroughly. Add the egg and vanilla extract, then mix in the peanut butter until all wet ingredients are combined. Add salt and flour, mixing until just incorporated. Spread the mixture in the baking dish evenly. Bake for 20-25 minutes or until a toothpick inserted in the middle comes out clean. Store in an airtight container in the refrigerator for one week or in the freezer for up to 3 months.
How to serve Peanut Butter Blondies
Slice into generous squares and serve warm with a scoop of vanilla ice cream for a cinematic hot-and-cold contrast. For a street-food riff, drizzle warm honey and sprinkle flaky sea salt; for espresso lovers, serve alongside a strong ristretto. These also travel well to potlucks—wrap slices in parchment for an on-the-go treat.
How to store Peanut Butter Blondies
Cool completely, then seal in an airtight container. Refrigerate up to one week for firmer slices; for longer life, freeze for up to three months. Thaw in the fridge overnight or on the counter for an hour before serving; a quick 10–15 second zap in the microwave revives that just-baked warmth.
Tips to make Peanut Butter Blondies
- Don’t overmix: stir until just combined to keep the texture tender, not cake-like.
- Use room-temperature egg for smoother emulsification.
- For glossy edges, press the batter evenly and tap the pan to remove air bubbles before baking.
- Swap light brown sugar for dark if you want a deeper molasses note.
- If your peanut butter is oily, stir it well so it blends uniformly with the butter and sugar.
Variations (if any)
- Chocolate-studded: fold in 1/2 cup chocolate chips for pockets of molten chocolate.
- Crunchy twist: use crunchy peanut butter or fold in chopped roasted peanuts for texture.
- Swirl style: drop dollops of chocolate-hazelnut spread and swirl with a knife before baking.
- Vegan swap: use a flax egg (1 tbsp flax + 3 tbsp water) and dairy-free butter to make these vegan-friendly.
FAQs
Q: Can I use crunchy peanut butter instead of creamy?
A: Absolutely — crunchy will add delightful texture. If it’s oil-separated, stir thoroughly before using.
Q: How do I know when they’re done?
A: The edges should be set and slightly pulling away from the pan; the center will still be soft but a toothpick inserted should come out mostly clean with a few moist crumbs.
Q: Can I double the recipe?
A: Yes — double everything and bake in a 9×13 pan. Baking time will increase (start checking at 25–30 minutes).
Q: Will these spread or be cakey if overbaked?
A: Overbaking dries them out into a cakier texture. Remove when the center is just set for chewy blondies.
Q: Can I add salt on top?
A: A light sprinkle of flaky sea salt right after baking elevates the peanut butter sweetness beautifully.
Conclusion
If you want a quick, indulgent dessert that feels like a late-night food market in a foreign city, these blondies deliver. For another take on peanut butter blondies with clear step photos, check out Peanut Butter Blondies – Gal on a Mission. For an in-depth recipe breakdown and troubleshooting tips, I also like the guide at Peanut Butter Blondies – Sally’s Baking Addiction.

Peanut Butter Blondies
Ingredients
Method
- Preheat the oven to 350°F (175°C) and line an 8x8 baking dish with parchment paper or aluminum foil. Lightly grease with cooking spray.
- In a large bowl, mix the melted butter and light brown sugar until well combined.
- Add the egg and vanilla extract, mixing well.
- Stir in the peanut butter until all wet ingredients are combined.
- Add in the salt and flour, mixing until just incorporated.
- Spread the mixture evenly in the prepared baking dish.
- Bake for 20-25 minutes or until a toothpick inserted in the middle comes out clean.