Ultra Thick, Soft and Fudgy Bakery Style Peanut Butter Brownies
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The peanut butter craving stops here, because these ultra thick bakery style peanut butter brownies are gloriously golden, extra chewy around the edges, and soft and fudgy right through the middle! Every hefty square is packed with creamy peanut butter, brown sugar, vanilla, and melty peanut butter chips.
They’re fudgy like a brownie, golden like a blondie, and bake up into thick, one‑inch bars that look totally bakery‑worthy.
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Why You’ll Love These Ultra Thick Bakery Style Peanut Butter Brownies
If you love peanut butter desserts, this peanut butter brownie recipe from scratch delivers a fudgy, blondie‑style bar loaded with melty peanut butter chips.
- They are fabulously thick! An 8‑by‑8‑inch pan keeps the batter from spreading into skinny bars, so every square rises tall and bakery‑style.
- The texture hits the sweet spot: chewy edges, a soft center, and just enough structure to pick up a square without losing that fudgy bite.
- Peanut butter gets all the attention. One full cup goes into the batter, while peanut butter chips add creamy pockets in every slice.
- No mixer is needed. A whisk, a sturdy spoon, and one large bowl take care of this peanut butter brownie recipe from scratch.
In a chocolate mood too? These 4-ingredient fudgy brownies bring the cocoa-rich goodness and plenty of thick, fudgy bite.
Ingredients for Soft and Fudgy Peanut Butter Brownies
You need creamy peanut butter, melted butter, two sugars, eggs, vanilla, flour, baking powder, salt, and peanut butter chips. Use a conventional creamy peanut butter, such as Jif or Skippy, rather than a drippy natural style. That thick, smooth texture gives these soft and fudgy peanut butter brownies their reliable height and rich peanut butter bite.
- 1 cup + 3 tablespoons creamy peanut butter: This is the star, so spoon it into a dry measuring cup and level the top.
- 6 tablespoons unsalted butter, melted and slightly cooled: Let it cool for a few minutes so it does not warm the eggs.
- 1 cup packed brown sugar: Pack it firmly for plenty of moisture and chew.
- 1/2 cup granulated sugar: This adds sweetness and helps the edges bake up beautifully.
- 2 large eggs: Whisk them into the peanut butter mixture until everything looks smooth.
- 1 tablespoon vanilla extract: Yes, a full tablespoon! It tastes wonderful with all that peanut butter.
- 1 1/2 cups all-purpose flour: Spoon the flour into the measuring cup and level it so the brownies stay soft.
- 2 tablespoons cornstarch: Cornstarch is magic for thickness.
- 1 teaspoon baking powder and 1/2 teaspoon salt: This little duo gives the bars a touch of lift and keeps the sweetness in line.
- 3/4 cup peanut butter chips: Fold them in last for creamy bites tucked all through the batter.
This peanut butter brownie recipe from scratch is rich, dense, and packed with peanut butter chips for a soft, chewy bite in every square.
How to Make Ultra Thick Bakery Style Peanut Butter Brownies
Bake the thick batter in a parchment-lined 8-by-8-inch pan at 350°F for 32 to 38 minutes. The batter will be much thicker than a pourable chocolate brownie batter, and that is exactly what you want. Spread it to the corners, smooth the top, and let the oven make those golden edges happen!
- Prepare the pan. Heat the oven to 350°F. Line one 8-by-8-inch baking pan with parchment paper, leaving an overhang, and lightly coat it with nonstick cooking spray.
- Whisk the butter and sugars. In a large bowl, whisk 6 tablespoons melted, slightly cooled unsalted butter, 1 cup packed brown sugar, and 1/2 cup granulated sugar until smooth.
- Add the peanut butter. Whisk 1 cup + 3 tablespoons creamy peanut butter into the butter and sugar mixture until creamy and evenly blended.
- Finish the wet mixture. Add 2 large eggs and 1 tablespoon vanilla extract. Whisk until the batter looks smooth and uniform.
- Add the dry ingredients. Stir in 1 1/2 cups all-purpose flour, 1 teaspoon baking powder, 2 tablespoons cornstarch and 1/2 teaspoon salt just until the last dry streaks disappear. The batter will be very thick.
- Fold in the chips. Gently fold 3/4 cup peanut butter chips through the thick batter until evenly scattered.
- Fill the pan. Press the full batch of batter evenly into the prepared 8-by-8-inch pan, pushing it into the corners and smoothing the top.
- Bake. Bake at 350°F for 32 to 38 minutes. The center should look set and soft, and a toothpick should come out with a few moist crumbs rather than wet batter.
- Cool before slicing. Cool the brownies in the 8-by-8-inch pan for at least 1 hour. Then use the parchment overhang to lift them out and cut them into 16 squares.
Tips for 1-Inch-High Ultra Thick Bakery Style Peanut Butter Brownies
Chill the Batter (Why It Helps)
Chill the batter in the fridge for 20–30 minutes before baking. This quick rest keeps the bars from spreading too much in the oven and gives you:
- taller, thicker bars
- a denser, chewier texture
- more even baking from edge to center
Peanut butter batters respond beautifully to chilling — the fats firm up just enough to help the bars rise instead of flatten, giving you that bakery‑style height you’re after.
Use the 8-inch square pan, measure the flour lightly, and cool the whole slab before cutting. A 9-inch pan makes thinner bars. Also, resist pressing extra flour into the cup. Too much flour takes the soft middle straight into dry territory.
Finally, do not judge the brownies while they are hot. The center finishes setting as the pan cools, which gives you that bakery-style height without overbaking the edges. The parchment sling also matters because it lets you lift the cooled slab out without digging at those gorgeous corners.
Fudgy vs. Structured: Pick Your Perfect Texture
Bake closer to 32 minutes for a softer, fudgier center or closer to 38 minutes for a firmer bakery-style slice. Oven temperatures and pans vary, so begin checking at 32 minutes. A metal pan gives the most predictable edges, while glass may need a few extra minutes.
For the fudgiest choice, look for several moist crumbs on the toothpick. For a more structured bar, wait until the center feels set with only a slight softness under your fingertip. Either way, one hour of cooling is part of the recipe. That wait gives the crumb time to settle into thick, chewy peanut butter blondie brownies you can slice cleanly.
How to Store Ultra Thick Bakery Style Peanut Butter Brownies
Store the completely cooled brownies in an airtight container at room temperature for up to 4 days. Place parchment between layers so the soft tops stay neat. For a firmer, chewier bite, refrigerate them for up to 1 week and let each square sit at room temperature for 15 to 20 minutes before serving.
For longer storage, wrap the brownies individually and freeze them in a freezer-safe container for up to 2 months. Thaw them while still wrapped at room temperature. A quick 8 to 10 seconds in the microwave brings back the soft center and makes those peanut butter chips extra creamy.
Thick Peanut Butter Brownie Variations
Keep the base quantities the same and swap up to 3/4 cup of chips or chopped candy for the peanut butter chips. The batter already has plenty of peanut butter flavor, so it plays very nicely with chocolate, salty crunch, and a little bakery-case sparkle.
- Chocolate chip: Replace the 3/4 cup peanut butter chips with 3/4 cup semisweet or milk chocolate chips.
- Peanut butter cup: Fold in 3/4 cup chopped mini peanut butter cups. Then put these peanut butter cup blondies on your next baking list too!
- Salty peanut crunch: Add 1/2 cup chopped roasted peanuts with 1/2 cup peanut butter chips.
- Chocolate drizzle: Cool the brownies completely, then drizzle the slab with 1/3 cup melted semisweet chocolate before slicing.
Ultra Thick Bakery Style Peanut Butter Brownies FAQs
Are Peanut Butter Brownies Actually Blondies?
Yes, these are blondie-style brownies because they contain no cocoa or melted chocolate. Brown sugar, butter, and peanut butter create their golden color, while the dense, chewy texture puts them squarely in the brownie family. Call them peanut butter blondies or peanut butter brownies. The thick, fudgy result is the delicious part!
Can I Use Natural Peanut Butter in these Ultra Thick Bakery Style Peanut Butter Brownies?
No, conventional creamy peanut butter gives the most reliable texture in this recipe. Natural peanut butter can separate, and its looser consistency may make the bars oily or change how they set. Choose a smooth, no-stir peanut butter.
Why Did My Peanut Butter Brownies Turn Dry?
Dry bars usually come from too much flour or too much oven time. Spoon and level the 1 1/4 cups of flour instead of scooping directly from the bag. Also, start checking at 32 minutes and pull the pan when a toothpick holds a few moist crumbs.
How Do I Get Clean Bakery Style Slices?
Cool the pan for at least 1 hour, then cut the lifted slab with a large sharp knife. Wipe the blade clean between cuts for crisp edges. For especially precise squares, chill the cooled slab for 20 to 30 minutes before slicing.
Ultra Thick Bakery Style Peanut Butter Brownies Coming Right Up
For an easy, crowd‑pleasing treat, try this peanut butter brownie recipe from scratch. Golden edges, a tender middle, and peanut butter chips in each square make these ultra thick bakery style peanut butter brownies pure peanut butter happiness! Let the slab cool, cut those bars tall, and enjoy that first rich, chewy bite. Happy baking!
I would love to see your soft and fudgy peanut butter brownies! Share them with me on Instagram, save the recipe on Pinterest, and show off those golden squares on Facebook.
More Recipes for the Baking List
- Peanut Butter Stuffed Brownies
- 20 Valentine’s Day Brownies eBook Cookbook
- Peach Muffins With Crumble Option
- Peanut Butter Caramel Brownie Protein Bars
- Healthy Chocolate Banana Peanut Butter Brownies
- Reese’s Peanut Butter Cup Brownies
Ultra Thick Bakery Style Peanut Butter Brownies
Equipment
- 8-by-8-inch metal baking pan
- Parchment paper
- Large mixing bowl
- Whisk
- Sturdy spoon or silicone spatula
- Wire cooling rack
Ingredients
Peanut Butter Brownies
- 1 cup creamy peanut butter, not natural + 2-3 more tablespoons peanut butter
- 6 tablespoons unsalted butter, melted and slightly cooled
- 1 cup packed brown sugar
- ½ cup granulated sugar
- 2 large eggs
- 1 tablespoon vanilla extract
- 1 ½ cups all-purpose flour, spooned and leveled
- 1 teaspoon baking powder
- 2 tbsp cornstarch
- ½ teaspoon salt
- ¾ cup peanut butter chips
- Nonstick cooking spray, for the pan
Instructions
- Preheat the oven to 350°F. Line one 8-by-8-inch baking pan with parchment paper, leaving an overhang, and lightly coat it with nonstick cooking spray.
- In a large bowl, whisk 6 tablespoons melted, slightly cooled unsalted butter, 1 cup packed brown sugar, and 1/2 cup granulated sugar until smooth.
- Whisk 1 cup + 3 tablespoons creamy peanut butter into the butter and sugar mixture until creamy and evenly blended.
- Add 2 large eggs and 1 tablespoon vanilla extract. Whisk until the batter looks smooth and uniform.
- Stir in 1 1/2 cups all-purpose flour, 1 teaspoon baking powder, 2 tablespoons cornstarch and 1/2 teaspoon salt just until the last dry streaks disappear. The batter will be very thick.
- Gently fold 3/4 cup peanut butter chips through the thick batter until evenly scattered.
- Press the full batch of batter evenly into the prepared 8-by-8-inch pan, pushing it into the corners and smoothing the top. Tip: Chill the batter 20–30 minutes before baking to prevent spreading and gives you: taller bars, denser chew, more even baking as PB batters respond really well to chilling if you wish
- Bake at 350°F for 32 to 38 minutes. The center should look set and soft, and a toothpick should come out with a few moist crumbs rather than wet batter.
- Cool the brownies in the 8-by-8-inch pan for at least 1 hour. Use the parchment overhang to lift out the slab, then cut it into 16 squares.
Notes
notes:
- Use conventional creamy, no-stir peanut butter for the most reliable thick texture; natural peanut butter may separate and make the bars oily.
- For softer, fudgier centers, bake closer to 32 minutes.
- For firmer bakery-style slices, bake closer to 38 minutes.
- The brownies must cool for at least 1 hour before slicing so their height and chewy texture can set.
Chill the Batter (Why It Helps)
Chill the batter for 20–30 minutes before baking. This quick rest keeps the bars from spreading too much in the oven and gives you:- taller, thicker bars
- a denser, chewier texture
- more even baking from edge to center
