Pasta Primavera

This is another simple and cheesy dish.  I love all the veggies in it.:)  Enjoy!
-1 lb fettuccine
-1 cup cooked, diced chicken
-2 cups milk
-3 Tbs cornstarch
-1 tsp salt
-1.2 tsp pepper
-1 cup ricotta cheese
-1/2 cup freshly grated Parmesan cheese
-3/4 cup chicken broth
-4 garlic cloves, minced
-16 oz sliced fresh mushrooms
-2 cups broccoli florets
-1/2 cup chopped onion
-1 cup diced tomatoes
Cook fettuccine according to package directions.  Drain.
Meanwhile, in a large sauce pan, heat milk, cornstarch, salt and pepper.  Stir constantly and cook until sauce thickens.  Remove pan from heat.
In a small bowl, combine 1/2 cup of the milk sauce with the ricotta and Parmesan cheeses.  Mix very well.  Pour mixture into milk sauce and mix well. 
In a large pan, heat broth to boiling.  Add garlic and cook for a couple of minutes.  Add mushrooms, broccoli and onions.  Cover and cook for 4 minutes. Add the tomatoes and cook for a minute longer.  Add cheesy sauce, cooked and drain pasta, and cooked chicken.  Mix well and enjoy!