Butternut Squash Polenta with Mushrooms + Leeks

Polenta
3/4 c Cornmeal
2c Chicken stock (or water and bullion)
1 c Butternut squash
1 tsp Salt
2 tbs Butter
1/4 c Parmesan cheese

1 c Mushrooms, assorted sliced
2 cloves Garlic
1 stalk Leek
1 Shallot
1 tbs Olive oil
Salt & Pepper to taste