Melt the butter in a medium-sized skillet over medium heat until it's shimmering.
Add the frozen riced cauliflower to the skillet.
Cook, stirring occasionally, for about 15 minutes or until the cauliflower is tender and any excess moisture has evaporated.
Remove the skillet from the heat. Immediately stir in the shredded cheddar cheese and heavy whipping cream until the cheese is completely melted and the sauce is smooth and creamy.
Season generously with salt and pepper to your liking.
Serve hot and enjoy immediately!
Don't be afraid to experiment with cheeses! A mix of sharp cheddar and Monterey Jack is delicious, or try smoked Gouda for a deeper flavor.