Making Grandma’s Ground Beef Casserole is straightforward. Follow these simple steps to create this delightful dish:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Brown the Beef: In a large skillet over medium heat, cook the ground beef until browned. Drain excess fat.
3. Add Aromatics: Add the chopped onion and minced garlic to the skillet. Sauté for about 3-4 minutes until the onion is translucent.
4. Mix in Vegetables: Stir in the canned diced tomatoes (with juices), tomato sauce, and frozen mixed vegetables. Season with oregano, salt, and pepper.
5. Combine Noodles: Add the cooked egg noodles to the mixture and stir until evenly combined.
6. Transfer to Baking Dish: Pour the beef mixture into a greased 9×13 inch baking dish.
7. Cheese Layer: Sprinkle the shredded cheddar cheese on top of the casserole.
8. Add Crunch: Evenly distribute the crushed potato chips as a topping.
9. Bake: Place in the preheated oven and bake for 30-35 minutes, or until the cheese is melted and bubbly.
10. Serve and Enjoy: Remove from the oven, let cool for a few minutes, then serve hot.

These easy steps result in a comforting dish that will bring everyone to the dinner table.