Pop the popcorn in the microwave.

In a microwave-safe bowl, melt the butter. Mix the marshmallows in the melted butter and microwave that for 30 seconds or until it is melted and stir.

Pour the popcorn into a baking dish and pour ¾ of the melted marshmallow mixture over the popcorn.

Drizzle the remaining marshmallow mixture over the popcorn.

Sprinkle the M&M’s, Lucky Charms marshmallows, and green sprinkles over the popcorn, then mix everything together.

Place the popcorn into a bowl and place the bowl into the freezer or refrigerator to cool for 20 minutes. Top with more M&M's and serve!