Pop the popcorn: Pop your microwave popcorn according to the instructions on the package. Once popped, place it in a large mixing bowl.

Melt the chocolates: In separate microwave-safe bowls, melt the white and milk chocolate chips. Heat in 30-second intervals, stirring after each, until smooth and fully melted.

Mix the marshmallows: In a saucepan over low heat, melt the mini marshmallows, stirring constantly until gooey. Once melted, drizzle over the popcorn and gently toss to coat all the kernels.

Drizzle the chocolate: Drizzle the melted white chocolate and milk chocolate over the popcorn and marshmallow mixture, making sure to cover it generously.

Add sprinkles and pretzels: Sprinkle rainbow sprinkles and pretzel pieces over the top for a fun, colorful finish!

Chill to set: Spread the mixture evenly on a parchment-lined baking sheet and refrigerate for 30 minutes to set.

Break and serve: Once set, break the bark into pieces and serve!

Enjoy your delicious, sweet and salty Marshmallow Popcorn Bark! Perfect for movie nights, parties, or just a fun treat anytime!