Pop the popcorn and remove any un-popped kernels. The popcorn should be light and fluffy.

Transfer the popcorn to a large mixing bowl and sprinkle with salt while warm.

Melt the butter over medium heat in a saucepan, stirring occasionally.

Add mini marshmallows to the melted butter and stir until completely melted into a smooth mixture.

Drizzle the marshmallow mixture over the salted popcorn and gently fold to combine.

Pour the coated popcorn onto a parchment-lined baking sheet and spread evenly.

While warm, sprinkle Easter Mix M&Ms and additional mini marshmallows on top.

Allow to cool completely, then break into pieces and store in an airtight container if not serving immediately.