Rainbow Marshmallow Fudge

3 cups semisweet or milk chocolate chips
2 tablespoons butter
1 can sweetened condensed milk
Pinch salt
1 teaspoon vanilla extract
2 cups colored miniature marshmallows

Melt chocolate chips with butter, sweetened condensed milk and salt. Remove from heat; stir in vanilla extract. Fold in miniature marshmallows. Spread evenly onto parchment paper-lined 8-inch square pan. Chill 2 hours or until firm.

Cut into squares.