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–+ servings
black casserole dish with French Onion Soup Casserole topped with melty cheese
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5 from 1 vote

French Onion Soup Casserole

Easy French Onion Soup Casserole with ground beef, orzo and caramelized onions in a creamy beef broth topped with golden toasted baguette slices and melty gruyere cheese. Ready in 30 minutes!
Prep Time10 minutes
Cook Time20 minutes
Course: Main Course
Cuisine: American
Keyword: french onion soup casserole, french onion soup, french onion casserole, onion soup, orzo, ground beef, ground beef recipe,
Servings: 4
Calories:

Equipment

  • large skillet
  • baking sheet for toasted baguette slices

Ingredients

  • 8 ounce baguette cut in 1/4" slices
  • 2 tablespoons butter
  • 2 tablespoons olive oil plus more for baguette slices
  • 2 medium onios very thinly sliced
  • 1/2 teaspoon garlic powder
  • 1 teaspoon sea salt
  • 1/4 teaspoon black pepper
  • 1 teaspoon fresh thyme remove from stem and minced
  • 1 tablespoon balsamic vinegar
  • 1 tablespoon worcestershire sauce
  • 1 pound lean ground beef
  • 2 cups beef stock
  • 1 cup orzo uncooked
  • 1/2 cup french onion chip dip
  • 8 ounces gruyere cheese shredded

Instructions

  • Preheat oven to 400 degrees. Spray a 9×13 baking dish with cooking spray and set aside.
  • Brush baguette slices with olive oil then place on a baking sheet. Bake 4-5 minutes or until golden brown then remove from the oven and set aside. 
  • Thinly slice onions (use a mandoline if you have one – if not, a sharp knife).
  • Melt butter and add olive oil to a large skillet. Add add onions, season lightly with salt and pepper. Toss to coat with the butter mixture and saute 15 minutes over medium heat or until softened and golden brown.
  • Stir in worcestershire sauce, balsamic vinegar, brown sugar, thyme and garlic. Simmer 2-3 minutes then transfer onions to the prepared casserole dish.
  • Add ground beef to the same skillet (don’t wash), season with salt and pepper. Saute 3-5 minutes or until cooked through and no longer pink. Drain any excess grease.
  • Stir in beef stock and uncooked orzo then add to the casserole dish. Cover tightly with aluminum foil. Bake 10 minutes in the 400 degree oven.
  • Remove from the oven, stir in the french onion chip dip then cover again with foil and continue baking 6-8 minutes or until the orzo is al dente. 
  • Top with toasted baguette slices then gruyere cheese and bake UNCOVERED 2-3 minutes or until the cheese is melted. Eat right away!