1. Cook the Macaroni
Begin by cooking the macaroni noodles according to the package directions. Be sure to cook them to the al dente stage, meaning they should still have a slight firmness when bitten. This ensures the pasta holds up well during the mixing and heating process.

2. Start the Beef and Onions
While the macaroni is cooking, place an extra-large skillet or Dutch oven on medium heat. Add the ground beef and diced onion to the pan. Cook them together, stirring occasionally, until the beef is completely browned and the onion becomes soft and translucent.

3. Drain the Grease
Once the beef and onions are cooked, drain any excess grease from the skillet. Removing the grease helps reduce the heaviness of the dish and improves its overall texture and flavor.

4. Season the Mixture
After draining, return the skillet to the heat. Season the beef and onion mixture with garlic salt, black pepper, chili powder, and hot sauce if desired. Adjust the seasoning amounts to suit your taste. Stir everything well so the flavors distribute evenly.

5. Mash the Tomatoes
In a separate large bowl, pour in the undrained whole stewed tomatoes. Use a potato masher to break the tomatoes into smaller, more manageable pieces. This step creates a chunky, rustic tomato base for your sauce.

6. Add Tomatoes to the Beef
Add the mashed stewed tomatoes directly into the seasoned beef mixture. Stir well to combine, ensuring that the beef and onion are evenly coated in the tomato sauce.

7. Combine with Macaroni
Once the macaroni is cooked and drained, add it to the skillet with the beef and tomato mixture. Stir thoroughly to combine all ingredients, allowing the sauce to coat the pasta fully.

8. Simmer and Serve
Reduce the heat and let everything simmer together for a few minutes. This gives the flavors time to meld. Once heated through and well combined, serve hot and enjoy your delicious homemade beef and macaroni skillet!