Preheat oven to 350 degrees. Lightly coat a 3-3.5 quart baking dish with nonstick cooking spray and set aside.
In a large skillet, cook the sirloin, onions, peppers, and garlic over medium heat until meat is no longer pink. Drain.
Combine meat, peppers, and onions with cooked pasta, corn and peas. Add tomato sauce, chili powder, and red pepper flakes. Stir to mix all ingredients and transfer to baking dish.
Cover and bake for 40 minutes or until heated through.
Per Serving (1/6th of recipe):
Saturated Fat: 1g
5 Weight Watchers Pointsplus.
6 Weight Watchers Smartpoints.