Place a large pot of salted water on cooktop on high heat. Cook pasta to package instructions. While waiting for water to boil and pasta to cook prep the rest of your ingredients:

Remove sausage from casings, heat a large pan on medium heat. Add two tablespoon olive oil to pan. Add sausage and cook through, using a spatula to break up meat. Stir frequently, 7-8 minutes. While sausage is cooking a water is heating, prep, garlic, shallot and grate cheese (don't forget to add pasta to water when it boils.

When sausage is done, use a slotted spoon to remove from pan and place on paper towel lined plate, leaving fat in the pan. Add garlic to fat left in the pan and cook for two minutes on med/low heat stirring frequently. Add shallot and red pepper flakes and cook for two more minutes, stirring often. Add sausage back to pan, turn off heat. Place spinach on top of sausage (I know it's a lot, but it's about to get wilted!) When pasta is done, strain in a colander but DO NOT rinse. Immediately add pasta to pan on top of spinach, allow to steam for one minute, this will wilt the spinach. Drizzle with remaining 2 tablespoon olive oil, sprinkle with sea salt and pepper, to taste. Toss. Pour onto a platter, toss with grated Parmesan and serve!