Step 1

Combine the marshmallows, 1/2 cup of the cream, and salt in a large saucepan and heat over medium heat, stirring frequently with a rubber spatula until the marshmallows have melted and the mixture is smooth, about 4 minutes. Meanwhile, microwave the chocolate chips on high in a large microwave-safe bowl until mostly melted, 2 minutes. Pour the marshmallow mixture over the chocolate chips and stir until completely combined. Set aside until completely cool, about 2 hours.

Step 2

Meanwhile, whip the remaining 1 1/2 cups cream in a large bowl with a hand mixer on medium speed or a whisk until stiff peaks form. Refrigerate, covered, until the chocolate mixture is ready.

Step 3

Gently fold the whipped cream into the chocolate mixture in three batches. It’ll take a while to completely incorporate, so be patient. Serve immediately or divide into individual serving dishes or ramekins and refrigerate, covered, for up to 3 days.