My kids wanted snacks at 2 PM on a Tuesday. I had already eaten the last store-bought bar hiding in the back of the pantry, so I grabbed a jar of strawberry jam, a tub of creamy peanut butter, and three cups of flour and started mixing.
These peanut butter and jelly bars turned out better than anything I was rationing. The base is a dense, buttery peanut butter dough pressed flat into a 9×13 pan, covered with a thick jam layer, topped with salted peanuts and rough pieces of the same dough, then baked until the edges go golden. One bowl. One pan. Here is exactly how I do it.
Why You’ll Love This Recipe
- Pantry-friendly. Butter, sugar, eggs, flour, peanut butter, jam. You own all of this right now.
- Feeds a crowd. A 9×13 pan cuts into 24 bars with no extra effort.
- Kid-approved. Children treat this as an upgrade on their favourite sandwich and request it by name within two days.
- No fruit prep. The jam layer skips all the chopping and mess of working with fresh fruit.
Tools You’ll Need
Nothing fancy, I promise.
- 9×13 baking dish. A smaller pan produces a jam eruption in your oven. Use the full 9×13.
- Offset spatula. A butter knife works, but spreading sticky dough over jam without an offset spatula tests your patience in ways you don’t need on a Tuesday.
- Hand mixer. Two minutes of machine creaming beats ten minutes of manual effort every time.
Ingredients
- 1 cup butter. Room temperature. Soft butter creams evenly into the sugar. Melted butter makes the dough greasy and flat.
- 1½ cups granulated sugar. These are dessert bars, not a wellness product.
- 1 teaspoon vanilla extract. Pure vanilla extract delivers noticeably cleaner flavor in simple baked goods like these. Imitation vanilla works if that’s what you have.
- 2 large eggs. Left at room temperature for 30 minutes. Cold eggs hit softened butter and cause it to seize into lumps.
- 2 cups creamy peanut butter. Standard processed only. Natural peanut butter separates during baking and makes the bars greasy. According to Serious Eats, stabilized fat in processed peanut butter behaves far more predictably in baked goods.
- 3 cups all-purpose flour. Spooned into the measuring cup and leveled. Scooping straight from the bag packs in extra flour and produces dry, crumbly dough that won’t press flat.
- 1 teaspoon baking powder. Check the expiration date before you open the box.
- 1½ cups jam. Strawberry and raspberry both work well. Blueberry produces bars with a bruised appearance that puts people off before they taste them.
- ⅔ cup salted peanuts. Optional, but the salt and crunch against the sweet jam make people ask you for the recipe.
- Powdered sugar. For dusting before serving.
Instructions
Throw the ingredients in a bowl, aggressively mix, and pretend you did not just eat a spoonful of raw dough.
- Prep the pan: Preheat the oven to 350 degrees and grease a 13×9 inch baking pan. If you skip the grease, you will be chiseling these out of the pan until next Tuesday.
- Mix the wet ingredients: Cream together butter and sugar until light and fluffy, about 2 minutes. Add eggs, vanilla and peanut butter, mixing until combined. If your butter was too cold, you will have weird little lumps—just keep mixing and pray.
- Add the dry ingredients: Add flour and baking powder, mixing until well combined. The dough will be super thick, which is exactly what we want so the jam does not sink to the bottom.
- Layer it up: Spread 2/3 of the batter onto the bottom of the pan, then spread jam over it and sprinkle with chopped peanuts. Leave a tiny border around the edges so the jam does not glue itself to the sides of the pan.
- Top and bake: Drop the remaining dough over the jam in teaspoon-size drops. It does not need to look perfect; the oven will melt it into a rustic, beautiful mess. Bake for 25-30 minutes until edges start to brown.
♥ The Misfit Tips!
- The cooling time is real. Cut these warm and the jam runs, the dough crumbles, and you eat it out of a bowl with a spoon. One hour minimum. Set a timer.
- Skip the flour swap. Replacing half the flour with graham cracker crumbs makes the base dry and brittle. The all-purpose flour base gives you the chew these bars need.
- Oat topping variation. Scatter a handful of old-fashioned rolled oats over the top dough pieces before baking. They toast in the oven and push the texture closer to a granola bar without touching the base recipe.
Troubleshooting Guide
Something went sideways? Been there. Here is how to fix it.
- Problem: The jam burned along the edges
- Why: The jam reached the pan sides and caramelized against the metal
- Fix: Trim the burnt edges and leave a half-inch border next time.
- Problem: The dough crumbled and wouldn’t press flat
- Why: Too much flour from scooping directly out of the bag
- Fix: Press the dough firmly with both hands. Body heat and pressure compact crumbly dough where a spatula just slides over it.
- Problem: The center stayed raw after 30 minutes
- Why: A cold oven or a thick glass pan slowing heat transfer
- Fix: Tent the pan loosely with foil to protect the edges and bake for another 5 to 10 minutes. Metal pans conduct heat faster than glass.
Perfect Pairings
These chewy peanut butter jelly bars pair well with:
- A tall, ice-cold glass of whole milk
- A cup of black coffee to cut through the sweetness
- A weekend potluck where you want credit for effort you didn’t exert
- A chaotic after-school moment when everyone hits the kitchen at once
How to Store peanut butter jelly bars
❤
- Counter. Airtight container at room temperature for up to 3 days.
- Fridge. Up to 1 week. The bars firm up in the cold and hold their shape better out of hand.
- Freezer. Wrap individual bars in plastic wrap and freeze for up to 3 months. Thaw on the counter for an hour before eating.
- Reheat. Ten seconds in the microwave restores the fresh-baked texture. Longer than ten seconds and the jam reaches a temperature that burns your mouth on contact.
Peanut Butter and Jelly Bars
Enjoy your favorite peanut butter and jelly sandwich flavors in a soft, chewy dessert bar.
Ingredients
Equipment
Method
- Prep the panPreheat the oven to 350°F (175°C). Grease a 9×13-inch baking pan with butter. Skip this and you spend the next hour chiseling bars out of the pan with a knife.
- Mix the wet ingredientsBeat the butter and sugar with a hand mixer on medium speed for 2 minutes until the mixture looks lighter in color and feels fluffy. Add the eggs, vanilla, and peanut butter, then mix until the batter looks uniform. Scrape down the sides once to catch any butter clinging to the bottom.
- Add the dry ingredientsAdd the flour and baking powder and mix until a thick, heavy dough forms. The density keeps the jam suspended in the middle during baking rather than sinking straight to the bottom of the pan.
- Layer the panPress two-thirds of the dough across the bottom of the prepared pan with your hands. Spread the jam over the dough in an even layer, leaving a half-inch border around all four edges. Jam that touches the pan sides caramelizes, burns, and fuses the bars to the metal. Scatter the salted peanuts over the jam.
- Top and bakeDrop the remaining dough in rough teaspoon-sized pieces across the jam. Gaps between pieces are fine. Bake for 25 to 30 minutes until the edges turn golden brown and the top looks set. The center feels slightly soft at 30 minutes and firms up completely during cooling.
- Cool before cuttingLet the bars sit in the pan for at least 1 hour. The jam stays molten long after the top looks done. Cut with a sharp knife wiped clean between cuts, then dust with powdered sugar before serving.