Cook noodles in boiling water 6 minutes or until done. Drain and rinse with cold water; drain well.
Heat 2 teaspoons olive oil in a large saucepan over medium-high heat. Add mushrooms and pepper; sauté 4 minutes. Remove mushroom mixture from pan.
Add 2 teaspoons olive oil to pan. Add onion and garlic; sauté 4 minutes or until tender. Add wine. Reduce heat, and simmer 8 minutes or until the liquid almost evaporates.
Sprinkle with flour; stir to combine. Add clam juice and clams; bring to a boil. Reduce heat; simmer until slightly thick (about 15 minutes). Stir in the noodles, mushroom mixture, cheese, parsley, and crème fraîche.