Caramelized Onion-Blue Cheese Burgers

Tonight we had burgers and Onion Rings. However it's not in my cooking nature to just make plain burgers. I decided to caramelize onions to mix in with the ground sirloin and then added a little crumbled blue cheese for good measure. The onions were cooked in a little butter, which added to the richness of the burger. The best part is that I have two more burgers in the freezer for later. Enjoy!

Caramelized Onion-Blue Cheese Burgers
2 Tbsp. butter
1/2 tsp. salt
1/2 tsp. pepper
1 small or half large onion, chopped
1 lb. ground sirloin
1 tsp. Montreal steak seasoning
2 ounces crumbled blue cheese

1. Melt butter in a skillet. Stir in onions, salt, and pepper; sauté for 10 minutes or until onions begin to caramelize.
2. Place ground sirloin in a bowl; stir in steak seasoning, caramelized onions (including melted butter), and blue cheese. Shape into patties.
3. Cook in a grill pan or on grill until done. Serve with buns and desired toppings.