Yield: 6 servings (4 points per serving for purple, 6 points per serving for blue and green)
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Preheat oven to 375 degrees F.
Peel and chop the potatoes. Boil for 20 minutes, then drain.
Start to brown the ground beef and add the onion. Once it's cooked add the garlic, oregano, salt and pepper. Cook for 1 minute.
Add the Worcestershire sauce, tomato paste and flour. Stir together well. Then add the beef broth and vegetables. Cook for 5 minutes.
Add the potatoes and skim milk to a mixing bowl. Use a hand-held mixer until the potatoes are mashed and smooth.
Spray an 8x8 baking pan with no-stick cooking spray. Add the meat mixture, then the mashed potatoes. Sprinkle the cheese over the mashed potatoes.
Bake for 20-25 minutes, until the cheese is melted.