In a large mixing bowl, thoroughly combine 2 cups of heavy cream, 1 cup of whole milk, 1 cup of granulated sugar, 1 teaspoon of vanilla extract, and your chosen flavor of JELL-O (about 3 ounces). Use a whisk to mix until smooth and frothy.

If using an ice cream maker, pour the blended mixture into the machine and churn according to the manufacturer's instructions for about 20-30 minutes until soft-serve consistency.

For a no-machine version, transfer the mixture into a freezer-safe container and freeze for about 8 hours or overnight, stirring every 2 hours for the first few hours.

For a firmer texture, transfer the ice cream to an airtight container and freeze for an additional 2 hours before serving.