This 5-ingredient oven baked rice cereal dessert is one of those toss-it-in-the-pan, walk-away, and let-the-oven-work-its-magic treats. It starts with dry, uncooked puffed rice cereal scattered right into a glass baking dish, then gets coated in a quick, sticky caramel made from pantry staples. The result is a chewy, slightly crispy bar that tastes like a cross between a cereal treat and a baked cookie bar. It’s perfect for busy weeknights, potlucks, or those evenings when you want something sweet without a lot of dishes.
Let the bars cool completely so they slice cleanly, then serve them with a cold glass of milk or hot coffee for the grown-ups. They’re great tucked into lunchboxes, brought along to kids’ activities, or cut into bite-size squares for a dessert platter. For a simple dessert plate, pair a square of this rice cereal treat with a few fresh berries or sliced apples to balance the sweetness.
5-Ingredient Baked Puffed Rice Cereal BarsServings: 12
Ingredients
4 cups dry uncooked puffed rice cereal
1/2 cup unsalted butter, melted
1 cup packed light brown sugar
1 large egg
1 teaspoon vanilla extract
1/4 teaspoon fine salt (optional, but recommended)
Directions
Preheat your oven to 350°F (175°C). Lightly grease an 8x8-inch or 9x9-inch oven-safe glass baking dish with a little butter or nonstick spray.
Scatter the dry, uncooked puffed rice cereal evenly into the bottom of the greased glass baking dish. Use your hands to spread it out so it forms an even layer. This is your base and crunch.
In a medium mixing bowl, whisk together the melted butter and brown sugar until the mixture looks thick and glossy and the sugar is mostly dissolved.
Add the egg, vanilla extract, and salt (if using) to the butter-sugar mixture. Whisk again until everything is smooth and well combined. This creates a simple caramel-like custard that will soak into the cereal as it bakes.
Slowly pour the butter-sugar-egg mixture evenly over the puffed rice cereal in the baking dish. Use a rubber spatula or the back of a spoon to gently press and stir, tossing the cereal right in the dish so every piece gets coated. Take a minute to work it into the corners so there are no dry patches of cereal.
Once the cereal is evenly coated and pressed into an even layer, gently pat the top down with your spatula so it’s mostly level. This helps the bars bake up evenly and hold together when sliced.
Bake in the preheated oven for 18–22 minutes, or until the edges are deep golden brown and the center looks set and slightly bubbly. The bars will firm up more as they cool, so don’t overbake.
Remove the baking dish from the oven and place it on a cooling rack. Let the dessert cool completely in the dish, at least 45–60 minutes, so it can set and slice cleanly.
Once cool, run a thin knife around the edges if needed, then cut into 12 squares or rectangles right in the glass dish. Serve at room temperature and watch your family reach for seconds.
Variations & Tips
For chocolate lovers, sprinkle 1/2 cup mini chocolate chips over the top right when the bars come out of the oven; let them melt slightly, then gently spread for a soft chocolate layer. You can also stir 1/2 cup chopped nuts (like peanuts, pecans, or walnuts) into the cereal before adding the wet mixture for extra crunch. If you have kids who like a little fun color, toss in 1/4 cup mini marshmallows or a few tablespoons of sprinkles with the cereal before baking—they may brown slightly but still taste great. For a slightly less sweet version, reduce the brown sugar to 3/4 cup; the bars will be a bit softer but still hold together. If you need this to be dairy-free, use a dairy-free buttery spread and check that your puffed rice cereal is made without added dairy. Always let the bars cool fully before cutting to avoid burns from hot sugar syrup, and remind kids not to touch the glass baking dish right out of the oven. Store leftovers tightly covered at room temperature for up to 3 days; for longer storage, wrap well and freeze for up to 1 month, thawing at room temperature before serving.
