01 -
Spoon into bowls right away. Sprinkle parsley and red pepper flakes over each. Make sure it's still hot when you dig in.
02 -
Tip the sausage into the pot of drained pasta. Pour that cheesy mozzarella sauce all over, then stir until everything's covered and mixed together.
03 -
Turn the stove to medium-high and drop butter into a saucepan. Let it melt. Stir in onion powder and garlic powder, give it a quick mix. Whisk in flour and cook that for about 3 minutes. Slowly add milk, whisking so you don't get lumps. Simmer that for another 3 minutes. Drop the heat a bit. Shake in the paprika and salt, keep stirring. Toss in shredded mozzarella a handful at a time, making sure each melts before adding more. Pour in the heavy cream, stir really well, and let it bubble softly for a couple of minutes.
04 -
Pour oil into a big pan and heat it on medium-high. Add those sausage slices and cook until both sides are browned a bit. Set them aside once done.
05 -
Boil a big pot of water. Add salt the way you like. Toss in the rigatoni and cook until it's just right—check the package for timing. Drain with a colander and keep in the pot, off the heat.