Preheat 400 degree oven.
Toss vegetables in olive oil salt and pepper and roast until golden brown.
Bring water and milk to a simmer.
Whisk in polenta and bring to a boil then reduce heat. Stir until creamy.
Whisk in pumpkin.
Remove from heat add Parmesan, butter, sage.
Drizzle olive oil and assemble.
4 servings