Leftover Pot Roast Casserole

By Yoly

4.6 / 5

10min

35min

See on AllRecipes

1 ½ tablespoons butter divided
½ pound baby carrots cut into horizontal quarters
¾ cup chopped onion
2 stalks celery chopped
2 cups shredded leftover pot roast
2 cups boiling water
½ cup milk
1 (4 ounce) package scalloped potatoes (such as Idahoan®)