1/2 cup sourdough or multi-grain fresh breadcrumbs*
6 oz. linguini pasta, uncooked, broken in half
1-1/2 cups spicy tomato basil pasta sauce
Use a sharp knife to cut a horizontal pocket in side of each chicken breast, taking care not to cut through to other side (or have your butcher do this for you). Stuff 2 tablespoons cheese into each chicken breast; place on a foil-lined shallow baking sheet. Spread mustard over tops of chicken. Sprinkle breadcrumbs evenly over chicken. Bake in a preheated 375°F oven 25 minutes.
Meanwhile, cook linguini according to package directions; drain in colander. Add sauce to same pot; heat over medium heat until hot. Return linguini to pot; toss with sauce.
Sprinkle 1/4 cup cheese over cooked chicken; return to oven and bake 2 minutes or until cheese is melted. Add remaining cheese to linguini mixture. Toss lightly and transfer to 4 serving plates. Top with chicken.