3 cups salted peanuts
2 cups peanut butter chips
2 cups mini marshmallows
1 (14 oz) sweetened condensed milk
3 tablespoons unsalted butter
1/2 teaspoon vanilla extract
Melt the butter and peanut butter chips in a large saucepan over medium heat until smooth, then stir in the condensed milk, vanilla extract and marshmallows, stirring until smooth and incorporated.
Generously grease a 9×13-inch baking dish with butter or nonstick spray, or line with parchment paper, then spread half the peanuts on the baking dish.
Pour the condensed milk mixture over the peanuts, then sprinkle the rest of the peanuts.
Refrigerate or let stand at room temperature until set, then cut into bars &