Preparation Steps

• Add bacon to a large oven-safe skillet over low heat. Cook until crispy, then set aside on a paper towel-lined plate. Reserve 1 tablespoon of bacon grease in the pan.
• In the same pan over medium-low heat, add 1 tablespoon of butter. Once melted, add sliced onions and shallots. Cook until caramelized, about 30 minutes, stirring frequently and adding splashes of water as needed to prevent burning.
• Preheat the oven to 375 degrees. In a large bowl, blend together cream cheese, sour cream, mayo, Worcestershire, black pepper, and a pinch of salt using a hand mixer. Fold in half of the gruyere, mozzarella, parmesan, and half of the cooked bacon.
• Once the onions are caramelized, stir in minced garlic and thyme, cooking until fragrant, about 1 minute. Stir in balsamic vinegar and remove from heat.
• Add the warm onion mixture to the creamy blend and stir to combine. Taste and adjust seasoning if necessary.
• Transfer mixture back to the skillet or to an 8×8 baking dish. Spread in an even layer. Top with remaining bacon, cheeses, and crispy French fried onions. Cover with foil and bake for 25 minutes.
• Remove foil and bake uncovered for another 15 minutes or until bubbly and golden brown. Serve with your choice of crackers or bread.