In a small bowl or large liquid measuring cup, combine heavy cream, whole milk, granulated sugar, and cherry pie filling. Mix until fully incorporated.

Transfer the mixture to a Ninja Creami pint and close the lid securely. Place the pint in your freezer to freeze for at least 24 hours.

Remove the pint from the freezer and take off the lid. Place the pint in the outer bowl assembly of the Ninja Creami machine.

Press the Ice Cream button and let the cycle complete, which should take around 2 minutes.

After the ice cream cycles, check the texture. If crumbly, reinsert the pint and use the Re-spin button. Add a tablespoon of milk if necessary to achieve a smooth consistency.

Create a well in the ice cream and fill it with brownie bits or chocolate chips for added flavor.

Re-insert the pint and select the Mix-in button to evenly distribute the mix-ins throughout the ice cream.

Remove the pint from the machine, scoop the ice cream into bowls, and serve.