oo-la-la onion casserole

The Dalles, OR
Updated on Sep 4, 2013

This simple yet elegant dish will fill your home with its tantalizing aroma! It's fantastically rich and delicious, and could easily be served as a main dish or as a side or course in a special occasion meal. It's as decadent as any upper crust restaurant -- you will not be disappointed!

prep time 40 Min
cook time 45 Min
method Bake
yield 4-8 serving(s)

Ingredients

  • 3 tablespoons butter
  • 3 large sweet onions, sliced thin
  • 2 cups shredded swiss cheese
  • 10 ounces can cream of mushroom soup
  • 2/3 cup whole milk or rich milk substitute
  • 1 teaspoon soy sauce
  • 2 teaspoons beef base, or good quality bouillon cubes
  • 1/4 teaspoon white pepper
  • 8 slices french-style bread, cut 1/2-3/4"

How To Make oo-la-la onion casserole

  • Step 1
    In a large 3 qt. saucepan, saute' onion slices in melted butter over med-low heat, until they're golden yellow, but not browned. Note: This step takes time -- 20-30 min. Stir the onion often. Watch carefully the last few minutes to prevent scorching.
  • Step 2
    Meanwhile, with food release spray, prepare 4-8 single-serving baking dishes (such as oven-safe soup bowls, ramekins, oval casserole or au gratin dishes); use four for meal-size servings, or eight dishes for appetizer and sides.
  • Step 3
    In a small saucepan, stir together the soup, beef base, milk, soy sauce, and pepper until warm and blended. Turn off heat and let set until onions are ready.
  • Step 4
    Divide the onions evenly into your baking dishes.
  • Step 5
    Layer 2/3 of the shredded Swiss cheese over the cooked onion.
  • Step 6
    Pour the soup mixture over the cheese layer, and stir gently to combine.
  • Step 7
    Cover the tops with a slice/s of french-style bread.
  • Step 8
    Bake, uncovered, at 350* for 10-15 min, til heated through.
  • Step 9
    Remove from oven. Push bread slices into the onion and soup mixture. Top with remaining cheese, and return to oven for an additional 10-15 min, or until lightly browned and bubbly.
  • Step 10
    Turn off the oven and allow the casserole to rest in the oven for 10-15 min more. Remove from oven and serve immediately, with a light green salad, and a glass of favorite wine.
  • Step 11
    NOTE: 1) My family is gluten intolerant so I used slices of GF french-style bread, which worked perfectly. 2) You could bake this in a 3 qt. casserole dish, but it's not as pretty when you serve it. If you're going to use the large casserole dish I recommend breaking the bread into chunks, to make serving easier.

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