Leftover Spaghetti Casserole

11 ingredients
7 steps

Ingredients

  • 1 onion
  • 1/2 c. chopped celery
  • 4 Tbsp. butter
  • 1 Tbsp. flour
  • 1/2 c. milk
  • 2 c. leftover roast beef, cubed
  • 3 c. cooked spaghetti
  • 1 small can mushrooms
  • 1 c. tomato sauce
  • 1 tsp. Worcestershire
  • grated cheese

Directions

  1. 1
    Saute onion and celery in butter in skillet until tender. Blend in flour.
  2. 2
    Stir in milk.
  3. 3
    Cook until thick, stirring constantly.
  4. 4
    Add remaining ingredients except cheese.
  5. 5
    Pour into casserole.
  6. 6
    Top with cheese.
  7. 7
    Bake at 350° for 25 minutes.

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