These no-bake cereal bars turn a box of cereal and a few inexpensive pantry staples into chewy, lightly crisp squares. They’re easy to make with cereal from Dollar General or any grocery store, and the recipe works with several cereal shapes and flavors.
Ingredients
- 6 cups (180 g) crisp rice cereal
- 4 cups (120 g) toasted oat cereal, such as O-shaped rings
- 1/2 cup (113 g) unsalted butter
- 1 bag (10 oz / 283 g) mini marshmallows, about 5 1/2 cups
- 1/4 teaspoon (1 g) fine salt
- 1 teaspoon (5 ml) vanilla extract
- 1/2 cup (85 g) chocolate chips, optional
- Nonstick cooking spray, for the pan and utensils
Instructions
- Line a 9-by-13-inch (23-by-33-cm) baking pan with parchment, leaving a little overhang to lift out the bars. Lightly coat the parchment, a large mixing bowl, and a sturdy spatula with nonstick spray. Measure both cereals into the bowl and stir to combine. If using chocolate chips, set them aside for now.
- Melt the butter in a large saucepan over low heat. Add the marshmallows and salt, then stir continuously until the marshmallows have melted into a smooth mixture, about 3–4 minutes. Keep the heat low; high heat can make the finished bars hard and brittle.
- Take the pan off the heat and stir in the vanilla. Pour the warm marshmallow mixture over the cereal. Fold gently but promptly until the cereal is coated. If adding chocolate chips, wait about 2 minutes for the mixture to cool slightly, then fold them in so they soften without disappearing completely.
- Transfer the mixture to the prepared pan. With the greased spatula or lightly greased hands, press it into an even layer. Use gentle pressure rather than compacting it firmly, which can make the bars dense. Let the pan stand at room temperature until set, about 1 hour.
- Lift the slab out using the parchment and cut it into 12 bars with a lightly greased knife. For smaller portions, cut each bar in half. Serve once set.
Tips
- Use fresh marshmallows for the softest texture. Stale marshmallows may melt unevenly, and extra heating to force them smooth can make the bars tough.
- Work quickly once the cereal meets the marshmallow mixture, because it firms as it cools. Grease the bowl, spatula, and hands first to make shaping easier.
- For a less sweet batch, use unsweetened crisp rice cereal and omit the optional chocolate. If your cereal is already very sweet, the salt helps balance the flavor.
- Check cereal labels if you’re cooking for someone with allergies or dietary restrictions. Cereal varieties and manufacturing facilities differ, and this recipe is not automatically gluten-free or dairy-free.
Serving Suggestions
Serve the bars at room temperature as an easy snack, lunchbox treat, or casual dessert. They pair well with milk, coffee, or tea. For a dessert plate, cut them into smaller squares and serve alongside fresh berries or sliced fruit. Keep the pieces small for young children, and supervise children while they eat, particularly if the bars are firm or densely packed.
For a tidy party platter, arrange the squares in paper baking cups or separate layers with parchment. The bars are easiest to handle after they have fully set; if they feel sticky, let them stand uncovered for a few extra minutes before serving.
Variations
Use one cereal: Replace both cereals with 10 cups (about 300 g) of a single crisp cereal. The exact weight varies by shape, so measure by volume and use a cereal that won’t crumble easily.
Add peanut butter: Stir 1/2 cup (128 g) creamy peanut butter into the melted marshmallow mixture before adding the cereal. It makes the bars richer and softer; consider reducing the chocolate chips or leaving them out.
Make them colorful: Fold in 1/2 cup (75 g) of candy-coated chocolate pieces after the mixture cools for a couple of minutes. Some colors may streak slightly into the warm coating.
Add dried fruit or nuts: Fold in up to 1/2 cup (60 g) chopped dried cranberries, raisins, or finely chopped nuts. Keep additions modest so the marshmallow mixture can still bind the cereal.
Storage and Reheating
Store the cut bars in an airtight container at cool room temperature for up to 3 days, separating layers with parchment so they don’t stick. Avoid a warm or sunny spot, which can soften the marshmallow binder. For food safety, refrigerate within 2 hours if the bars have been served or left out in a warm environment; refrigeration is not required for ordinary storage of this shelf-stable treat, but it can make the bars firmer.
To freeze, wrap individual bars and place them in a freezer-safe container for up to 6 weeks. Thaw at room temperature for about 30–45 minutes. These bars do not need reheating; warming them can make the coating sticky and overly soft.
Frequently Asked Questions
Can I make these cereal bars with only one kind of cereal?
Yes. Use 10 cups (about 300 g) of one cereal in place of the two-cereal blend. Choose a crisp cereal that holds its shape, and measure by volume because different cereals weigh different amounts.
Why are my bars hard?
The marshmallows may have been heated too long or over high heat, or the cereal may have been pressed too firmly into the pan. Melt the marshmallows gently and press the mixture only until it reaches the corners.
Can I use large marshmallows instead of mini ones?
Yes. Weigh out 10 ounces (283 g), which is more reliable than counting because marshmallow sizes vary. They may take a little longer to melt, so stir over low heat until smooth.
Can I make the bars without butter?
Butter adds flavor and helps the marshmallows melt smoothly. A plant-based butter alternative can work in the same amount, though the flavor and firmness may differ. Avoid replacing it with water, which can make the mixture sticky and difficult to set.
How do I keep cereal bars from sticking to the knife?
Lightly grease the blade and wipe it clean between cuts. Let the slab set fully before slicing; cutting while warm can pull apart the edges.
Can I make these gluten-free?
Only if every ingredient, especially the cereal, marshmallows, and chocolate chips, is labeled gluten-free and suitable for the person who will eat them. Some cereals contain malt or are subject to cross-contact, so check package labels rather than relying on the cereal’s appearance.
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