Preheat the oven to 350F. Lightly butter a 9×13 inch casserole dish or 12 inch cast iron skillet.
In a medium bowl, combine 1 3/4 cups of the flour, the black pepper, Original Seasoning, smoked paprika, and garlic salt.
Dip each steak in the flour mixture until each side is generously coated.Pour a thin layer of oil into a large skillet. Heat on high heat until very hot. Add the steaks to the skillet and sear for 1 1/2 to 2 minutes on each side, until lightly browned.
In a medium bowl, combine the milk, soup concentrate, and beef broth. Sift in the remaining 1 cup of flour and mix well.
Pour half of the milk mixture into the casserole dish or skillet. Place the steaks in the dish in a single layer. Top with the sliced onioni. Por the remining milk mixture over the top. Season with salt and pepper to taste.
Cover with tin foil and bake for 50 minutes. Remove the foil and continue baking for 10 minutes, or until the meat has cooked through and is tender. Serve hot.