Creamy Ham and Potatoes Recipe

Ingredients

• 8 medium potatoes, peeled and cut into 1/4-inch slices
• 2 medium onions, finely chopped
• 1-1/2 cups cubed fully cooked ham
• 2 Tbsp. butter OR margarine
• 2 Tbsp. all-purpose flour
• 1 tsp. ground mustard
• 1/2 tsp. each salt & pepper
• 1 can (10-3/4 oz.) condensed cream of celery soup, undiluted
• 1-1/3 cups water
• 1 cup (4 ounces) shredded cheddar cheese