Sweat Treats To Make is my nickname for the warm, gooey s'mores bars I bake when the oven does all the hard work for me. You get that campfire flavor without standing over a fire in July.
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Think of these like a cozy blanket for your sweet tooth. The graham crust is the sturdy bottom sheet, the chocolate is the soft middle layer, and the marshmallows are the puffy comforter on top.
One quick tip before we start: let the bars cool for 20 minutes before slicing, or the marshmallow will stretch like warm cheese on a pizza and glue your knife to the pan.
Why You'll Love This Recipe
About the Ingredients
1 1/2 cups (180g) graham cracker crumbs (about 12 full sheets)
Pulse whole crackers in a food processor for the freshest flavor. If you are out, crushed digestive biscuits or shortbread cookies swap in one-for-one.
1/2 cup (113g) unsalted butter, melted
Melt it in the microwave in 20-second bursts so it does not spatter. Salted butter works too, just skip the added salt below.
1/4 cup (50g) granulated sugar
This sweetens the crust and helps it hold together. Light brown sugar gives a deeper caramel note if you prefer.
1/4 teaspoon fine sea salt
A pinch balances all the sweetness. Kosher salt is fine, but use half the amount since the flakes are bigger.
2 cups (340g) semi-sweet chocolate chips
Buy good-quality chips because the chocolate is the star here. Chopped milk chocolate bars melt even creamier if you have them.
3 cups (150g) mini marshmallows
Minis toast faster and pack into every corner. Regular marshmallows work, but cut them in half so they melt evenly.
1/2 cup (120ml) sweetened condensed milk
This is the secret glue that keeps the layers from separating. Full-fat coconut milk is a dairy-free stand-in, though it stays looser.
1 teaspoon vanilla extract
Real vanilla rounds out the chocolate flavor. Maple syrup is a lovely swap if you want a warmer, cozier note.
Tips & Tricks
Press the Crust Firmly
Use the flat bottom of a measuring cup to pack the crumbs tight, or the bars crumble when you lift them out.
Chill Before Slicing
Twenty minutes in the fridge sets the chocolate so your cuts stay clean and sharp.
Watch the Broiler Like a Hawk
Marshmallows go from golden to charcoal in under 30 seconds, so stand right at the oven door.
Line the Pan
Overhang your parchment paper so you can lift the whole slab out in one piece.
Pro Tips
Step-by-Step Instructions
1. Heat the oven
Preheat your oven to 350F (175C) and line an 8×8-inch pan with parchment, leaving overhang on two sides. A cold oven makes the crust bake unevenly, so give it a full 10 minutes to heat.
2. Make the crust
Stir the graham crumbs, melted butter, sugar, and salt in a bowl until it looks like wet sand. Press it firmly into the pan and bake for 8 minutes, until it smells toasty and the edges look set.
3. Add the chocolate
Pull the pan out and scatter the chocolate chips evenly over the hot crust. The residual heat starts melting them right away, which helps everything fuse together.
4. Pour the filling
Whisk the condensed milk with the vanilla and drizzle it over the chocolate in a thin, even stream. Tilt the pan gently so it settles into every gap.
5. Pile on marshmallows
Scatter the mini marshmallows over the top in a single, generous layer. Do not press them down, or they sink and lose that puffy toasted crown.
6. Bake until gooey
Bake at 350F (175C) for 20 to 25 minutes, until the marshmallows puff and turn light golden. You want bubbling edges and a soft, jiggly center when you nudge the pan.
7. Broil for color
Switch to broil and toast for 30 to 60 seconds, until the peaks are deep golden brown. Stay at the oven door the whole time, because this step moves fast.
8. Cool and slice
Cool the pan on a wire rack for 20 minutes, then lift the slab out and cut into 12 squares with a warm, dry knife. Wipe the blade between cuts for clean edges.
Delicious Variations
Peanut Butter Swirl
Dollop 1/3 cup warm peanut butter over the chocolate before baking for a salty-sweet twist.
S'mores Brownie Base
Swap the graham crust for a boxed brownie layer and bake 5 minutes longer.
Coconut Dream
Use coconut milk instead of condensed milk and sprinkle 1/4 cup toasted coconut over the marshmallows.
How to Store Sweat Treats To Make
Refrigerator
Store in an airtight container at room temperature for 2 days, or in the fridge for up to 5 days. Let cold bars sit out 10 minutes before eating so they soften.
Freezer
Wrap individual squares in plastic, then freeze in a zip-top bag for up to 2 months. Thaw at room temperature for about 30 minutes.
Reheating
Microwave a single bar for 10 to 15 seconds, just until the marshmallow relaxes. A toaster oven at 300F (150C) for 3 minutes brings back the toasted top.
Frequently Asked Questions
Q: Can I make these s'mores bars ahead of time?
Yes, you can bake them up to 2 days ahead and store them covered at room temperature. The marshmallow topping stays soft, and the crust actually firms up nicely overnight. Just add the flaky salt right before serving.
Q: Why did my marshmallows burn instead of toast?
Your broiler was too close or you walked away for a few seconds too long. Move the rack to the middle position, keep the door cracked, and pull the pan the moment the peaks turn golden. If they still scorch, skip the broiler and bake 5 extra minutes at 350F (175C).
Q: Can I use regular marshmallows instead of mini ones?
Yes, but cut the regular marshmallows in half so they melt evenly and do not stay raw in the middle. Mini marshmallows toast faster and cover the pan more evenly, which is why I reach for them first.
Q: How do I keep the bars from falling apart when I slice them?
Chill the pan for 20 minutes before cutting, and use a warm knife wiped clean between slices. Pressing the crust firmly before baking is the other big fix, since a loose crust is what usually crumbles.
Q: Are these s'mores bars gluten-free?
They can be if you use gluten-free graham crackers, which most major brands now make. Everything else in the recipe is naturally gluten-free, so it is a simple one-swap fix.
Bake a pan of Sweat Treats To Make this weekend and watch how fast they disappear. Snap a photo of those golden marshmallow peaks and tag me so I can cheer you on. Your challenge: make them once for someone you love, then make them again just for you. Happy simplifying!
Sweat Treats To Make
Sweat Treats To Make are gooey oven s'mores bars with a buttery graham crust, melted chocolate, and toasted marshmallow tops ready in 50 minutes.
🧂 Ingredients
- 1 1/2 cups (180g) graham cracker crumbs (about 12 full sheets)
- 1/2 cup (113g) unsalted butter, melted
- 1/4 cup (50g) granulated sugar
- 1/4 teaspoon fine sea salt
- 2 cups (340g) semi-sweet chocolate chips
- 3 cups (150g) mini marshmallows
- 1/2 cup (120ml) sweetened condensed milk
- 1 teaspoon vanilla extract
📋 Instructions
- 1Heat the oven — Preheat your oven to 350F (175C) and line an 8×8-inch pan with parchment, leaving overhang on two sides. A cold oven makes the crust bake unevenly, so give it a full 10 minutes to heat.
- 2Make the crust — Stir the graham crumbs, melted butter, sugar, and salt in a bowl until it looks like wet sand. Press it firmly into the pan and bake for 8 minutes, until it smells toasty and the edges look set.
- 3Add the chocolate — Pull the pan out and scatter the chocolate chips evenly over the hot crust. The residual heat starts melting them right away, which helps everything fuse together.
- 4Pour the filling — Whisk the condensed milk with the vanilla and drizzle it over the chocolate in a thin, even stream. Tilt the pan gently so it settles into every gap.
- 5Pile on marshmallows — Scatter the mini marshmallows over the top in a single, generous layer. Do not press them down, or they sink and lose that puffy toasted crown.
- 6Bake until gooey — Bake at 350F (175C) for 20 to 25 minutes, until the marshmallows puff and turn light golden. You want bubbling edges and a soft, jiggly center when you nudge the pan.
- 7Broil for color — Switch to broil and toast for 30 to 60 seconds, until the peaks are deep golden brown. Stay at the oven door the whole time, because this step moves fast.
- 8Cool and slice — Cool the pan on a wire rack for 20 minutes, then lift the slab out and cut into 12 squares with a warm, dry knife. Wipe the blade between cuts for clean edges.
Maya writes about sustainable living and zero-waste swaps for busy households. She focuses on small, actionable changes that fit into real life, from kitchen composting to low-impact cleaning routines. Her articles are grounded in everyday practicality rather than theory.
