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.