green bean casserole with mushroom bechamel

★★★★★ 1 Review
LisaGoad avatar
By Lisa Goad
from Matthews, NC

I wanted to create a substitute for the canned cream of mushroom soup. Over the years it just seemed to not taste the same to me - so I thought I would try to improve on the recipe. This will feed a large crowd (15) at the holidays - so cut it down if it is for a smaller family.

★★★★★ 1 Review
serves 15
prep time 30 Min
cook time 45 Min

Ingredients For green bean casserole with mushroom bechamel

  • 3 bags
    frozen french style green beans - defrosted
  • BECHAMEL SAUCE
  • 4 c
    whole milk
  • 4 Tbsp
    butter
  • 6 Tbsp
    all purpose flour
  • 2 - 4
    bay leaves, fresh (depends on the size)
  • 2 clove
    garlic - crushed
  • 1 tsp
    kosher salt
  • 1/4 tsp
    white pepper
  • REMAINING INGREDIENTS
  • 4 c
    cremini mushrooms, finely chopped
  • 3 Tbsp
    butter
  • 1/4 c
    sage leaves, fresh finely chopped
  • kosher salt to taste
  • black pepper, to taste
  • 12 oz
    cheddar cheese, shredded
  • french fried onions - to cover top

How To Make green bean casserole with mushroom bechamel

  • 1
    Greenbeans: Defrost, drain, squeeze out water with paper towels Preheat oven to 350 degrees.
  • 2
    Start Béchamel In saucepan Add milk, bay leaves, garlic and heat on low/med-low. Allow milk to heat up slowly so the flavor from the garlic and bay infuses. Add Kosher Salt and White Pepper. Start on mushrooms.
  • 3
    Mushrooms Love that food processor! Break mushrooms in 1/2 by hand into your food processor. Pulse until finely chopped and you have at least 4 cups. Sauté in 3T butter until all liquid is evaporated. Season with Kosher Salt, Black Pepper to taste and Chopped Sage.
  • 4
    Complete Béchamel In second saucepan melt butter, add flour and sauté on med. Until flour is cooked, before it starts to brown, gradually whisk in warm milk ensuring lumps are removed.
  • 5
    Prepare Casserole Add Mushrooms to Béchamel sauce - taste. This will be seasoning all those beans. Mix Defrosted/well drained Green Beans with homemade Creamy Mushroom Sauce. Place in casserole dish sprayed with Cooking Spray. Bake in pre-heated oven until casserole bubbles. Remove from oven and sprinkle with Cheddar Cheese and French Fried onions. Return to oven and allow cheese to melt, onions to lightly brown.

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