Preheat the oven to 350°F. Butter a 13" x 9" x 2" casserole dish.
Melt 2 tbsp butter in a large skillet over medium heat. Add the mushrooms, stir often until the juices evaporate and the mushrooms are lightly browned. Remove mushrooms.
Melt the remaining butter over medium heat. Add the flour and cook 2 minutes. Stir in the milk and chicken until sauce comes to the boil and thickens (3 - 5 minutes). Mix in the Amore Tomato, Garlic and Herb Pastes. Add salt and pepper to taste.
Bring a large pot of water to boiling. Add salt and pasta. Cook, stirring occasionally, until the pasta is tender but firm (al dente). Drain and return to the pot.
Add sauce from the skillet, mushrooms, turkey, peas and 1/2 cup of the grated cheese to the pasta. Toss well and place the mixture into the prepared casserole dish. Stir together breadcrumbs and remaining 1/2 cup of parmesan cheese. Sprinkle the mixture over the top.
Bake for 45 minutes or until the top is browned and the sauce is bubbling.