In a large mixing bowl of a stand mixer with the whisk attachment or with a hand-held electric mixer, beat the heavy cream to stiff peaks, ensuring not to overbeat.
2 cups heavy cream
Gently fold the sweetened condensed milk, cocoa powder, vanilla extract, mini marshmallows, and chocolate chips into the whipped cream with a rubber spatula until well combined. Keep some marshmallows and chocolate chunks aside to garnish the top of the ice creams once frozen.
14 oz condensed milk, 1/2 tsp vanilla extract, 1/4 cup cocoa powder, 1 cup mini marshmallows, 1/2 cup chocolate chips
Transfer the mixture to a loaf pan, cover with plastic wrap, and freeze until solid, a minimum of 6 hours but ideally overnight.
Notes
Avoid crystals: To prevent ice crystals from forming, make sure the plastic wrap sits directly on the surface of the ice cream before freezing. Alternatively, use a freezer-proof glass container with a lid.Fold gently: When combining the whipped cream with the other ingredients, fold gently to retain as much air as possible for a light, creamy texture.Storage: Properly stored in a freezer-safe container, this ice cream can last up to 1 month. Remember to cover the surface with plastic wrap before sealing to prevent ice crystals.