Step 1: Brown the Ground Beef

In a large pot, brown the ground beef over medium heat until fully cooked. Drain the excess fat and set the meat aside.

Step 2: Sauté the Vegetables

In the same pot, add the diced onions, shredded carrots, diced celery, and dried parsley flakes. Cook the mixture until the veggies are tender, roughly 5 minutes.

Step 3: Add Potatoes and Broth

Add the diced potatoes and chicken broth to the vegetable mixture. Bring everything to a gentle boil, then reduce the heat and simmer until the potatoes are tender, which should take about 10-12 minutes.

Step 4: Make the Roux

In a separate saucepan, melt the butter over medium heat. Stir in the all-purpose flour to create a roux, cooking it for about 2 minutes.

Step 5: Prepare the Creamy Sauce

Gradually whisk in the milk to the roux, stirring until you achieve a smooth consistency. Cook this mixture until it slightly thickens, then stir in the shredded sharp cheddar cheese until it is completely melted and creamy.

Step 6: Combine the Cheese Sauce

Pour the prepared cheese sauce into the soup pot containing the vegetable and potato mixture. Stir well to combine, then add the salt and black pepper for seasoning.

Step 7: Incorporate the Ground Beef and Sour Cream

Reduce the heat to low and blend in the cooked ground beef and the sour cream. Stir the soup until it is smooth and heated thoroughly.

Step 8: Serve

Serve the soup hot, enjoying all the delicious flavors of a cheeseburger in a comforting bowl.