French Onion Lasagna | 100th Episode of Sold on Flavor
This French Onion Lasagna is a comfort-food twist on a classic favorite—layered with savory ground beef, deeply caramelized onions, Swiss cheese, tender lasagna noodles, and a rich béchamel sauce finished with Gruyère cheese.
For our 100th episode of Sold on Flavor, we’re celebrating the recipes you love most: bold flavors, cozy meals, and food meant to be shared. This dish brings all the warmth of French onion soup in a hearty, baked pasta form that’s perfect for family dinners and cold nights.
If you love comfort food recipes, layered casseroles, and elevated home cooking, you’re in the right place.
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This is a meal that should be shared with a friend in your new home. 🏡🍽️
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French Onion Lasagna
• 1 lb Lasagna Noodles – cooked (you could use “oven ready”)
• 2.25 lbs Ground Beef – cooked, drained
• 3 lbs White Onions – sliced
• ½ cup Butter (1 stick for onions and 1 for sauce)
• 12 slices Swiss Cheese
• 1/3 cup flour
• 1 qrt milk
• 1 tsp Salt
• 1 tsp Pepper
• 8-10 oz Gruyere Cheese shredded (6 for sauce – 2-4 to top)
• Package of Crispy Fride Onion Strings/Straws
Caramelize onions
Medium heat, sliced onions, 1 stick of butter, stir constantly
Sauce
Melt butter, add flour, cook down flour for a couple minutes at medium-medium low temp, stir constantly, add salt and pepper, gradually add milk, once thickened add gruyere, remove from heat.
Build your layers, save sauce for top, to keep top layer moist, bake at 350 for 1 hour.