Cheese Tortellini and Tuna

1 package of refrigerated cheese tortellini
1 can white meat tuna, broken into pieces
1 cup each, finely chopped red bell bepper and green bell pepper
1/4 cup finely chopped onion
1/2 cup evaporated milk (skim is fine)
2 teaspoons flour
1/2 teaspoon dry mustard
1/2 teaspoon pepper

Cook pasta according to package directions. Do not add salt. Drain.

Using a large skillet, cook bell peppers and onion over medium heat until crisp-tender.

Whisk together milk, flour, mustard and black pepper. Add to vegetables. Stir until thickened. Add tuna and pasta and cook 3-5 minutes, until everything is mixed and hot.