🧅🧀 French Onion Meatloaf with Gruyère Cheese ⏱️ Time Prep: 20 minutes Cook: 55–65 minutes Rest: 10 minutes Total: about 1 hour 30 minutes Servings: 6–8 📝 Ingredients Caramelized Onions 2 large yellow onions, thinly sliced 2 tbsp butter 1 tbsp olive oil ½ tsp salt ½ tsp sugar (optional, helps caramelization) ½ cup beef broth Meatloaf 1½ lb (680 g) ground beef (80/20 works best) 2 large eggs ¾ cup breadcrumbs ½ cup milk 2 cloves garlic, minced 1 tbsp Worcestershire sauce 1 tsp dried thyme ½ tsp