Slice shallots, mushrooms, sausage, and set aside.
In a large pot on the stove, boil pasta according to package instructions.
Once pasta is done, rinse and transfer to another bowl.
Using the same pot, place over medium heat and add oil.
Once hot, add the sausage and shallots and garlic (using a garlic masher).
Stir for about 3-4 minutes, then add mushrooms, Italian seasoning and red pepper flakes (if using).
Stir for another 5 minutes and add baby kale and lemon juice.
The kale will slowly wilt.
Add pasta back in the pot and coat everything well!Enjoyyyyyyy!