Peanut Butter S’mores Cereal Bars
These peanut butter s’mores cereal bars are chewy, lightly toasted, and made with Magic Spoon cereal for a high-protein, easy snack. Perfect for meal prep, lunchboxes, or a sweet treat that keeps you full.
Creator: Leslie Stokes
If there’s one thing I’ll never get tired of, it’s turning everyday pantry staples into snacks that feel fun but still fit into real life. These peanut butter s’mores cereal bars are exactly that.
They’re chewy, slightly crispy, lightly toasted on top, and packed with protein thanks to Magic Spoon s’mores cereal. They taste like a treat, but they’re actually filling — which is always the goal around here.
I originally made these as a no-bake bar, but popping them into the oven for just a few minutes to toast the marshmallows on top took them to another level. That lightly golden, almost burnt s’mores top? So worth it.
These are the kind of bars you make once and then keep coming back to all week long — for snacks, lunchboxes, or those mid-afternoon “I need something sweet” moments.
Why You’ll Love These Peanut Butter S’mores Cereal Bars
• Made with Magic Spoon cereal for a high-protein base
• No complicated steps or equipment
• Lightly toasted for that classic s’mores flavor
• Great for meal prep and grab-and-go snacks
• Kid-friendly and adult-approved
• Easy to customize with other cereal flavors
They’re sweet without being overwhelming, rich from the peanut butter, and have that nostalgic s’mores vibe without needing a campfire.
Flavor Variations Using Magic Spoon Cereal
One of my favorite things about this cereal bar recipe is how easy it is to switch up flavors using different Magic Spoon cereals. Here are a few fun ideas:
• Peanut butter chocolate bars using Magic Spoon chocolate cereal
• Cookies & cream bars with white chocolate chips
• Cinnamon roll bars using Magic Spoon cinnamon cereal and a drizzle of vanilla glaze
• Peanut butter banana bars using Magic Spoon peanut butter cereal and banana chips
• Birthday cake bars topped with sprinkles and vanilla chips
This base recipe works with almost any flavor, which makes it perfect for mixing things up week to week.
Tips for storage
These cereal bars are perfect for meal prep.
Store them in an airtight container at room temperature for up to 3 days, or in the fridge for up to 7 days. I actually love them chilled — they firm up just enough and hold together beautifully.
If you’re packing these for lunches, wrap individual bars in parchment paper for easy grab-and-go snacks.
I hope this meal prep helps you! Don’t forget to follow along on social meadia for more Meal Prep + healthy recipes!
Peanut Butter S’mores Cereal Bars (High-Protein, No-Bake + Lightly Toasted)
Ingredients
- 3 cups Magic Spoon s’mores cereal
- 1/2 cup natural no-sugar peanut butter
- 1/3 cup honey or maple syrup
- 1 teaspoon vanilla extract
- Pinch of salt
- 1/3 cup chocolate chips semi-sweet or dark
- 1 cup mini marshmallows divided
Let's Make It
- Line an 8×8 pan with parchment paper, leaving a little overhang for easy removal later.
- In a small saucepan over low heat, warm the peanut butter and honey just until smooth and pourable. You don’t want this boiling — just warm enough to stir easily. Remove from heat and stir in the vanilla and salt.
- In a large bowl, add the Magic Spoon cereal and half of the mini marshmallows. Pour the warm peanut butter mixture over the top and gently fold until everything is evenly coated.
- Transfer the mixture to your prepared pan and press it in firmly. This step really matters — press harder than you think so the bars hold together nicely once cut.
- Sprinkle the chocolate chips and remaining marshmallows evenly over the top and gently press them in just a bit.
- Place the pan in a 400°F oven for 5–7 minutes, just until the marshmallows puff and turn lightly golden on top. Keep a close eye on them — you want toasted, not burned.
- Remove from the oven and let cool completely before slicing into bars.
Nutrition Facts
Per Bar Nutrition (8 bars)
Calories: ~280
Protein: ~11 g
Fat: ~15 g
Carbohydrates: ~29 g
Fiber: ~2–3 g
Sugar: ~14–16 g
Meal Prep in 1 Hour
You can use any two of the meals in this series to get your meal prep done in just about and hour, give or take!
Having your breakfast and lunch ready for the week helps you stay on track with your nutriton, saves you time and money! I truly beleive that meal prep does not need to be over complicated, take too much time or be boring!
I always get asked- “do you ever get tired of eating the same thing all week?” and the answer is, no! Not when the food taste good! I give plenty of variety in these preps and keep it simple!
As always, thanks for being here and remember, don’t over complicate the process! Take a deep breath, you got this!
