Valentine Rice Crispy Treats

1/2 cup butter
10 cups crispy rice cereal
9 cups miniature marshmallows
2 cups candy hearts (tiny red spice hearts)
Candy Hearts (the ones with messages)
3/4 cup miniature chocolate chips
Red food coloring

Melt butter and marshmallows, stirring until smooth.

In a large bowl, mix rice cereal, tiny red spice hearts and chocolate chips together.

Blend 2 drops red food coloring into marshmallow mixture, adding more coloring if necessary to reach desired shade. Add marshmallow mixture to cereal mixture; stir quickly to combine. Spread on a large buttered pan; press with buttered hands. While warm, press on candy heart (with messages) spaced 1 to 2 inches apart.