Heat oven to 375°F. Spray two 2 to 2 1/2-cup individual casseroles with nonstick cooking spray. In small nonstick skillet, cook sausage over medium-high heat until no longer pink, breaking apart sausage with spoon. Drain.
Stir in peas and carrots, milk and soup. Layer half of potatoes and half of sausage mixture in each sprayed casserole.
In small bowl, combine bread crumbs and margarine; mix well. Sprinkle evenly over casseroles.
Bake at 375°F. for 15 to 20 minutes or until bubbly and lightly browned.