Super creamy chocolate marshmallow swirl ice cream is a decadent, cooling treat. Break out the toasted marshmallows, hot fudge, and graham crackers for an over-the-top s'mores sundae bar!
Combine the cocoa powder, sugars and salt together in a large saucepan.
Whisk in the cream, milk, and vanilla and set over med/low heat. Continue whisking until the dry ingredients are dissolved.
Pour the mixture into an airtight container and chill in the refrigerator for at least 4 hours or overnight.
Spin the chilled mixture in an ice cream maker according to manufacturer instructions.
Spread half the once cream in a pan (a loaf pan is ideal). Spread half of the marshmallow cream over the ice cream and swirl through with a knife.
Repeat with remaining ice cream and marshmallow topping and swirl with a sknife. Cover tightly and freeze, ideally overnight. Scoop, serve, and enjoy!