Melt the butter in a large saucepan over low heat. Add mini marshmallows and stir until completely melted and smooth. Mix in red food coloring until you reach your desired pink hue.

Remove from heat and gently fold in Rice Krispies until well combined.

Lightly grease a 9x13 inch baking dish. Transfer the mixture into the dish, pressing down evenly with greased hands or wax paper.

Allow to cool for about 30 minutes at room temperature, then use a heart-shaped cookie cutter to cut out shapes.

Serve on a decorative plate and enjoy!