S’mores Bars with Yellow Cake Mix are gooey, chocolatey bars with a buttery graham-cracker crust, fudgy cake-mix center, and toasted marshmallow topping. All the campfire flavor without the fire—perfect for parties, potlucks, or anytime you crave s’mores indoors!
Why You’ll Love This Recipe
These S’mores Bars with Yellow Cake Mix are pure childhood nostalgia in one easy pan. A simple graham cracker-cake mix crust bakes up golden and sturdy, then gets loaded with melty chocolate and crowned with gooey toasted marshmallows that brown perfectly under the broiler. No campfire required, no skewers, no mess—just 15 minutes of prep and one pan of irresistible bars that disappear in seconds. They’re perfect for summer gatherings, sleepovers, game days, or when you just need that graham-chocolate-marshmallow fix any time of year.
Recipe Tips and Tricks
- Crush graham crackers finely for a solid crust.
- Press crust firmly so bars hold together.
- Use Hershey bars for authentic flavor (they melt perfectly).
- Broil at the very end – watch like a hawk (30–60 seconds is all it takes).
- Let cool completely before cutting for clean squares.
- Line pan with parchment overhang for easy removal.
- Cut with a hot knife for perfect edges.
- Double chocolate by adding chips to the batter.
Ingredients Notes
- Yellow Cake Mix (15.25 oz): Creates the soft, buttery middle layer.
- Graham Crackers (1½ cups crushed): Classic s’mores base flavor.
- Butter (¾ cup melted): Binds crust and adds richness.
- Hershey’s Milk Chocolate Bars (5–6 regular): Melts into fudgy pockets.
- Marshmallow Fluff (7 oz jar) or mini marshmallows (4 cups): For that signature gooey top.
Variations and Substitutions
- Peanut Butter: Swirl ½ cup peanut butter over chocolate.
- Dark Chocolate: Use dark chocolate bars for grown-up taste.
- Gluten-Free: GF yellow cake mix + GF graham crackers.
- Nutella S’mores: Swap chocolate for Nutella.
- Golden Graham Bars: Use Golden Grahams instead of crackers.
- Mini S’mores Bites: Bake in mini muffin tins.
- Toasted Coconut: Sprinkle coconut before broiling.
- Boozy: Add 1 tbsp bourbon to crust.
Storage Options
- Room temperature: airtight container up to 2 days
- Refrigerator: up to 5 days (marshmallows stay soft)
- Freezer: freeze cut bars up to 2 months (thaw at room temp)
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