Ingredients

• 2 lb. potatoes
• salt and pepper
• 1 Tbs. vegetable oil
• 6 medium carrots
• 6 celery stalks
• 1/2 tsp. dried thyme
• 1 lg onion
• 1/4 c. flour
• 1/4 c. tomato paste
• 2 lb. ground beef
• 1 c. whole milk
• 1 1/2 c. shedded sharp white cheddar