Fruity PEBBLES with Marshmallows is a sweet, fruity treat full of marshmallow-y goodness. To experience this fun-tastic fruity marshmallow-y cereal, just pour yourself a bowl any time of the day! The Marshmallow-y way to rock Fruity PEBBLES with Marshmallows cereal is a sweet, fruity treat full of marshmallow-y goodness. To experience this fun-tastic fruity marshmallow-y flavor explosion, just pour yourself a bowl any time of the day. Plus it's a gluten-free cereal.