Tomato Cream Shrimp Linguine, a fast gourmet dinner

7 oz whole grain linguine
2 T butter
½ cup chopped onion
1 tsp minced garlic
¼ cup whole wheat flour
2 cups milk
14 oz can diced tomatoes
1 tsp salt
¼ tsp pepper
1 lb raw, peeled, deveined shrimp

Boil pasta in salted water. Saute onion and garlic in butter. Add flour and stir. Add milk and tomatoes. Stir until thick. Do not boil. Add salt and pepper. Add shrimp and cover. Steam shrimp until they are pink throughout.