Peanut butter and jelly is a classic for a reason: rich, salty peanut butter and bright, fruity jam make each other taste even better. These granola bars bring that combination to a snack you can bake ahead, slice, and tuck into a lunchbox or reach for in the afternoon.

A chewy peanut butter oat mixture forms both the base and the crumbly topping, with a thin layer of jam in between. You can change the flavor with whatever jam you have on hand.

Why You’ll Love These Ganola Bars

These granola bars have the familiar flavor of a PB&J sandwich, with toasted oat edges and a soft, jammy middle. They’re sweet enough to feel like a treat, yet simple enough to make without a mixer. Using the same mixture for the base and topping keeps prep easy, too.

Bake a pan for the week, then cut it into generous bars for an afternoon snack or smaller squares to share. Because they contain peanuts, check any school or activity rules before packing them for a group.

Ingredients You’ll Need

Old-fashioned rolled oats give the granola bars their hearty texture. A little all-purpose flour helps the base hold together while leaving the topping pleasantly crumbly. Quick oats absorb moisture differently, so rolled oats work best here.

Creamy peanut butter adds flavor and helps bind the oats. Conventional creamy peanut butter gives the most consistent result. If you use natural peanut butter, stir it thoroughly before measuring. Honey adds sweetness and helps hold the granola bars together, while brown sugar encourages the edges to turn golden.

Jam or preserves creates the jelly layer. Strawberry and raspberry are favorites, but grape works if you want that classic sandwich flavor. Choose a spreadable jam rather than a loose fruit sauce and keep the layer thin so the center sets. Vanilla, salt, and optional chopped peanuts round out the flavor.

Recipe: Peanut Butter and Jelly Granola Bars

Makes 12 bars

Ingredients

• 2 cups old-fashioned rolled oats
• ½ cup all-purpose flour
• ⅓ cup packed light brown sugar
• ½ teaspoon kosher salt
• ½ cup creamy peanut butter
• ¼ cup honey
• 4 tablespoons unsalted butter, melted
• 1 teaspoon vanilla extract
• ½ cup strawberry or raspberry jam or preserves
• ¼ cup chopped roasted peanuts (optional)

Instructions

1. Heat the oven to 350°F. Line an 8-inch square baking pan with parchment, leaving an overhang on two sides.
2. Stir together the oats, flour, brown sugar, and salt. In another bowl, stir the peanut butter, honey, melted butter, and vanilla until smooth. Combine the wet and dry mixtures; stir in the peanuts if using.
3. Press about three-quarters of the oat mixture firmly into the pan. Spread the jam over it, leaving a ¼-inch border. Crumble the remaining oat mixture on top and press lightly.
4. Bake for 25–30 minutes, until the edges are golden and the topping is lightly browned. Cool completely in the pan, then lift out and cut into 12 bars.

Tips for Bars That Hold Together

Pressing the base firmly into the pan makes a difference. Use the bottom of a measuring cup or glass to compact it into an even layer before adding the jam. This gives the baked bars a sturdy foundation and makes them easier to pick up.

Use just enough jam to cover the base thinly and leave a narrow border so it doesn’t bubble against the sides of the pan. The bars will still feel a little soft when they first come out of the oven. Let them cool completely before cutting; for especially tidy slices, refrigerate the cooled slab for 20 to 30 minutes and use a sharp knife.

Easy Variations

Raspberry jam brings a pleasantly tart note, while strawberry gives the granola bars a sweeter, familiar PB&J flavor. Grape jam works if you want the classic sandwich combination. If your jam has large pieces of fruit, give it a quick stir before spreading so the layer stays even.

For more crunch, include the chopped roasted peanuts or scatter a few over the topping before baking. A pinch of cinnamon in the oat mixture adds warmth without overpowering the peanut butter. You can also drizzle the cooled bars with a little warmed peanut butter, though that makes them better suited to serving at home than packing.

How to Store and Pack Them

Once the granola bars are completely cool, keep them in an airtight container with parchment between layers. They’ll keep at room temperature for up to 3 days or in the refrigerator for up to 1 week. For longer storage, wrap individual bars and freeze them in a sealed container for up to 2 months. Thaw before eating.

These bars travel best when fully cooled and wrapped individually. On a hot day, tuck them beside an ice pack so the jam stays neat. They’re a convenient choice for peanut-friendly lunchboxes, road trips, or an easy snack with coffee or a glass of milk.

With their chewy oat base, fruity center, and crumbly peanut butter topping, these granola bars make a familiar combination feel a little new. Bake a pan when you have a few minutes to spare, and you’ll have a ready-to-grab treat for the days ahead.