Boil water in medium pot and cook pasta according to cooking instructions. Once pasta is cooked al dente, drain and set it aside.
In the meantime, heat large skillet or cast iron pan over medium heat and add olive oil. Add shallot and sauté until translucent.
Toss in kale and garlic to the skillet/pan and combine with shallots. Cook kale until leaves are tender then stir in mushrooms.
Once mushrooms are tender, add butter and combine with veggies. Next stir in milk or half and half and simmer for 1 minute. Toss in pasta and grated cheese to the skillet/pan and combine with veggies. Make sure cheese gets incorporated into pasta mixture evenly and does not clump up. Turn down heat to medium-low and simmer the mixture for 1-2 minutes to thicken the sauce.
Once pasta sauce thickens, toss in better than bouillon and combine with pasta and sauce.
Transfer pasta to a serving plate or pasta bowl. Add crushed red pepper or fresh ground pepper on top and serve immediately.