Lasagna with back

6 submarine rolls or 6 bolillo roll 2 cups spaghetti sauce with meat 1/2 cup sour cream or 1/2 cup ricotta cheese , if you prefer 1 egg white 1 teaspoon[...]

1 1/2 lbs ground beef 1 onion , chopped 2 (14 ounce) chicken broth 2 (14 ounce) diced tomatoes 1 (15 ounce) tomato sauce 2 teaspoons italian seasoning 1[...]

1 (32 ounce) jar prego mushroom and green pepper flavor spaghetti sauce 1 (15 ounce) container ricotta cheese 2 tablespoons italian seasoning 1 1/2[...]