Real Recipes From Real Home Cooks ®

oo-la-la onion casserole

(1 rating)
Recipe by
Tam D
The Dalles, OR

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!

(1 rating)
yield 4 -8
prep time 40 Min
cook time 45 Min
method Bake

Ingredients For oo-la-la onion casserole

  • 3 Tbsp
  • 3 lg
    sweet onions, sliced thin
  • 2 c
    shredded swiss cheese
  • 10 oz
    can cream of mushroom soup
  • 2/3 c
    whole milk or rich milk substitute
  • 1 tsp
    soy sauce
  • 2 tsp
    beef base, or good quality bouillon cubes
  • 1/4 tsp
    white pepper
  • 8 slice
    french-style bread, cut 1/2-3/4"

How To Make oo-la-la onion casserole

  • 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.
  • 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.
  • 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.
  • 4
    Divide the onions evenly into your baking dishes.
  • 5
    Layer 2/3 of the shredded Swiss cheese over the cooked onion.
  • 6
    Pour the soup mixture over the cheese layer, and stir gently to combine.
  • 7
    Cover the tops with a slice/s of french-style bread.
  • 8
    Bake, uncovered, at 350* for 10-15 min, til heated through.
  • 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.
  • 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.
  • 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.