6 cups Fruity Pebbles cereal
4 cups mini marshmallows
3 tablespoons unsalted butter
1 teaspoon vanilla extract
Lightly grease a 9×13-inch pan
Melt the butter in a large pot over low heat
Add the marshmallows and stir until fully melted
Remove from heat and stir in the vanilla extract
Add the Fruity Pebbles cereal
Stir until evenly coated
Press the mixture into the prepared pan
Let cool for about 30 minutes
Cut into squares and serve