Hot Caramelized Onion Dip with Gruyere (Bubbly and Golden) - My Home Made Recipe

Ingredients

• 2 large onions, halved and thinly sliced
• 1 tablespoon butter
• 1 tablespoon oil (like avocado oil)
• ½ teaspoon fresh thyme
• ½ teaspoon onion powder
• 2 teaspoons granulated sugar
• 1½ teaspoons balsamic vinegar
• 4 ounces cream cheese, softened
• ½ cup sour cream
• ½ cup mayonnaise
• ¾ cup milk
• 1 tablespoon minced garlic
• ½ teaspoon red pepper flakes
• ¼ teaspoon black pepper
• ¼ cup grated parmesan cheese
• 4 ounces brie, diced
• 1 cup shredded gruyere
• Prepared crostini