Brown the ground beef in a large skillet.

Drain any excess fat from the browned beef.

Add Lawry's spaghetti sauce mix, tomato sauce, sugar, butter, and 2 cups of water to the skillet.

Stir well to combine all ingredients.

Simmer the sauce for 20 minutes, stirring occasionally.

While the sauce is simmering, cook the manicotti noodles for 10 to 15 minutes, adding oil to the water to prevent sticking.

Drain the cooked manicotti noodles and rinse them in cold water.

In a separate bowl, combine the mozzarella cheese, cottage cheese, eggs, parsley, salt, and pepper.

Mix the cheese mixture until well combined.

Stuff each manicotti noodle with the cheese mixture.

Layer the stuffed manicotti in a casserole dish.

Pour the tomato sauce over the manicotti.

Sprinkle Parmesan cheese over the top of the sauce.

Bake in a preheated oven at 350°F (175°C) for 20 minutes.