Paula's Double Onion Butter Burgers!

Inspired by the Butter Burgers of Solly's Grille in Milwaukee...I made these burgers yesterday! YUM! Of course, as usual, this recipe is with my changes!
Paula's Double Onion Butter Burgers
1 stick plus 2 Tbsp. butter
 3 onions, chopped
Kosher Salt and Fresh Ground Pepper
1/3 cup water
1-1/2 lb. Ground Sirloin
1 Tsp. McCormick's Montreal Steak Seasoning
4 Publix Onion Schnecken Rolls

Garnish: Lettuce, Tomatoes, Pickles,  Mayo, Mustard, Ketchup

Melt 2 Tbsp. butter in a large cast iron skillet over medium heat. Add onions and cook 6-8 minutes until translucent. Add water, season with salt and pepper. Cover and cook until onions are a golden brown.

Season Ground Sirloin with 1 tsp. Montreal Steak Seasoning. Form into 4 large oval thin patties. Heat skillet over medium high heat 3-4 minutes per side until well done.

Meanwhile toast the split Onion Schnecken under broiler. Place patties of the bottom buns and top each with 1/3 cup of the onions. Spread 2 Tbsp. butter on each top bun and put on top of burgers. Serve with platter of lettuce tomatoes to be added as desired.

I served mine with My Potato Salad (Rick's Favorite) ! Delish!