High-Protein PB&J Rice Krispie Bars (Printable)

Crispy cereal bars with protein peanut butter drizzle and swirled jelly layers

# What You Need:

→ Cereal Base

01 - 4 cups crisp rice cereal
02 - 1.5 cups mini marshmallows
03 - 0.25 cup unsalted butter
04 - 0.25 cup creamy peanut butter
05 - 0.5 teaspoon vanilla extract
06 - Pinch of salt

→ Protein Drizzle

07 - 0.5 cup vanilla protein powder
08 - 0.33 cup creamy peanut butter
09 - 2 tablespoons unsweetened almond milk
10 - 2 tablespoons maple syrup or honey

→ Jelly Swirl

11 - 0.33 cup fruit jelly or jam

# How To Make It:

01 - Line an 8x8-inch square baking pan with parchment paper, leaving overhang on all sides for easy removal.
02 - In a large saucepan over low heat, melt the butter and peanut butter together. Add marshmallows and stir constantly until completely melted and smooth. Remove from heat and stir in vanilla extract and salt.
03 - Add the crisp rice cereal to the marshmallow mixture and fold gently until evenly coated.
04 - Transfer the cereal mixture to the prepared pan and press firmly and evenly using a spatula or your hands.
05 - In a small bowl, whisk together protein powder, peanut butter, almond milk, and maple syrup until smooth and pourable. Adjust almond milk quantity for desired consistency.
06 - Drizzle the protein mixture evenly over the pressed cereal layer using a spoon or whisk.
07 - Spoon small dollops of jelly over the protein drizzle. Use a knife or skewer to gently swirl the jelly and protein together, creating a marbled pattern.
08 - Cover and refrigerate for at least 1 hour until fully set and firm.
09 - Lift bars out using the parchment overhang and cut into 12 equal squares using a sharp knife.

# Expert Advice:

01 -
  • They're ridiculously easy to make with zero baking required, just melting, mixing, and chilling.
  • The protein drizzle actually tastes like a peanut butter protein shake, not chalky or bitter like some gym food.
  • You get that perfect texture contrast between crispy cereal, creamy peanut butter, and jammy swirls all in one bite.
  • One bar genuinely keeps you satisfied, unlike those deflating store-bought snack bars.
02 -
  • If your bars are crumbly instead of cohesive, you either didn't press the base layer firmly enough or your marshmallows weren't melted completely smooth; it's a texture thing that matters more than you'd think.
  • The protein drizzle needs to be the right consistency before it goes on top, because too thick and it sits on the surface like concrete, but too thin and it sinks into the cereal layer and disappears.
03 -
  • Use a squeeze bottle for the protein drizzle if you have one, because it gives you way more control than a spoon and the lines look intentional instead of accidental.
  • If your kitchen is warm, chill the mixing bowl before you add the marshmallows so everything melts evenly without any burnt edges.
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