Baked Potatoes With Meat Sauce

2 large baking potatoes 1 (32 ounce) marinara sauce 1/2 lb ground beef 1 small onion , chopped 1 teaspoon Worcestershire sauce salt and pepper 1 cup cheddar[...]

8 -10 medium yukon gold potatoes , peeled 1 tablespoon olive oil 1/2 cup nonfat plain yogurt 2 tablespoons fat-free mayonnaise 1/4 cup light sour cream 3[...]