1-Preheat oven to 350°F. In a large skillet over medium heat, warm olive oil. Add chopped onion and ground beef; cook 8-10 minutes until beef is browned and onions are translucent. Season with salt and pepper.

2-Add tomato paste, garlic, Italian seasoning, celery salt, and drained diced tomatoes with chilies. Cook 5 more minutes, stirring frequently, until mixture thickens slightly.

3-Meanwhile, boil water in a large pot and cook egg noodles for 3 minutes. Reserve about 2 cups noodle water and drain noodles.

4-In a separate bowl, whisk sour cream, softened cream cheese, cornstarch, and 1/2 cup reserved noodle water until smooth.

5-Combine partially cooked noodles with the remaining reserved noodle water and the sour cream mixture. Transfer to a greased 9×13-inch deep baking dish. Season with salt and pepper.

6-Spread beef mixture evenly over noodles.

7-Sprinkle shredded Colby Jack cheese over the top.

8-Bake for 25-30 minutes until cheese is bubbly and lightly browned.