Step 1

Place a large skillet over medium-high heat. Add the beef and stir for 5 to 7 minutes, or until browned and crumbly. Drain the grease.

Step 2

Add the sugar, salt, garlic salt, and tomato sauce into the browned beef. Reduce heat to medium-low and cook for 20 minutes for the flavors to blend.

Step 3

Turn off the heat and let the ground beef cool to room temperature.

Step 4

While simmering the beef mixture, cook the egg noodles. Fill a large pot with salted water and bring to a boil. Add the egg noodles and cook for 5 minutes, stirring occasionally. The noodles should be cooked through, but still be firm. Drain liquid using a colander.

Step 5

Preheat the oven to 350 degrees Fahrenheit. Grease a 9x13-inch casserole with butter.

Step 6

In a large bowl, combine the sour cream, cream cheese, and diced onion.

Step 7

Arrange half of the egg noodles into the greased casserole. Cover with half of the sour cream mixture, and then with half of the ground beef mixture. Repeat the layering until all the ingredients are used. Top the casserole with cheddar cheese.

Step 8

Bake the casserole for 25 to 30 minutes, or until the cheese has browned and melted. Serve and enjoy!