French Onion Grilled Cheese

This is my all-time favorite Grilled Cheese Sandwich!  It just takes a little bit of patience, but it's worth it.  Dunking it into Tomato Soup is a must.

INGREDIENTS

8 slices good quality bread I used thick cut Italian bread, sliced
Butter for spreading
12 oz Gruyere cheese sliced thinly
8 oz White cheddar cheese sliced thinly
2 yellow onions sliced
1 tsp fresh thyme minced
2 tsp fresh rosemary minced, divided
1 tsp brown sugar
Salt and pepper to taste
3 Tbsp butter divided
1 Tbsp olive oil

DIRECTIONS

• Add 1 1/2 Tbsp butter and olive oil to a skillet and heat over MED-LOW heat.
• Add diced onions, salt, pepper, fresh thyme and 1 tsp of fresh rosemary to the hot skillet and saute, stirring often, until onions are soft and starting to brown, about 10 minutes.
• Stir brown sugar into the onions and cook another minute.
• Transfer onions to a plate.
• Spread one side of two pieces of bread with a little bit of butter.
• To the same skillet, add remaining butter and rosemary, and heat over MED heat. Swirl to coat the bottom of the skillet with the melted butter.
• Add both pieces of bread, butter side down, and cook until bread is golden brown and crunchy, about 2-3 minutes.
• As soon as you add the bread to the skillet, add a bit of cheese to the top of each piece of bread. Once it starts to melt a little, sprinkle a couple tablespoons of the caramelized onions over the top of one of the pieces of bread.
• When the bread is good and golden brown, sandwich the pieces of bread together and cook on LOW until cheese is fully melted.
• Transfer to a plate, repeat with remaining slices of bread and ingredients.