Start by grating the sharp cheddar and mozzarella cheese. Gather all other ingredients including macaroni, heavy whipping cream, and seasonings.

In a large pot, combine the uncooked macaroni and enough water to cover it completely. Bring the water to a rolling boil over medium-high heat (about 5-7 minutes).

Reduce the heat to medium-low and cook the macaroni for 6-8 minutes, or until al dente, ensuring enough water remains in the pot.

Lower the heat to low, add the heavy whipping cream, and stir to combine. Gradually add the grated cheddar, mozzarella, and seasonings while stirring continuously until the cheese melts and sauce thickens (3-5 minutes).

Taste and adjust seasoning if necessary. Serve hot, garnished with additional cheese or paprika if desired.