Pre-heat oven to 500F and roast bell peppers for 25-30 minutes rotating half way through so they brown evenly. They should be soft and slightly charred.
Add oil to a large skillet and saute the onion and garlic until it starts to brown. Toss them into a blender
Peal the thin layer of skin as best you can and coarsely chop the roasted peppers and toss them into the blender with the onions and garlic.
Add a half cup of water with the chicken boullion and blend until smooth (about 1 minute)
Pour the contents of the blender back into the pan and add the butter, sour cream and minced parsley.
Continue to cook, stirring occasionally on low-medium heat until it thickens and easily coats the back of a spoon.
Salt and pepper to taste and remove from heat.
Add the strained noodles to the skillet and toss until they’re evenly coated. Gradually fold in the Parmesan.