01 - In a shallow dish, combine the flour, salt, black pepper, paprika, and garlic powder. Mix until evenly blended. Dredge each cube steak through the seasoned flour, coating both sides thoroughly. Shake off any excess and set the steaks aside, reserving the remaining seasoned flour in the dish.
02 - Heat 2 tbsp of vegetable oil in a large skillet over medium-high heat. Working in batches to avoid overcrowding, sear the cube steaks for 2 to 3 minutes per side until a deep golden crust forms. Transfer the browned steaks to a plate and set aside.
03 - Reduce heat to medium and add the remaining 1 tbsp of vegetable oil to the same skillet. Add the thinly sliced onion and cook for 5 to 6 minutes, stirring occasionally, until soft and golden brown. Add the minced garlic and sauté for 1 additional minute until fragrant.
04 - Sprinkle 2 to 3 tbsp of the reserved seasoned flour over the caramelized onions. Stir continuously and cook for 1 minute to toast the flour and eliminate any raw taste.
05 - Gradually pour in the beef broth and milk while whisking constantly, scraping up all the browned bits from the bottom of the skillet to deglaze the pan. Stir in the Worcestershire sauce and dried thyme. Allow the mixture to simmer for 3 to 5 minutes until it thickens slightly.
06 - Return the browned cube steaks and any accumulated juices back to the skillet, nestling each piece down into the gravy. Cover with a lid, reduce heat to low, and simmer gently for 25 to 30 minutes until the steaks are fork-tender and the gravy has fully developed its flavor.
07 - Taste the gravy and adjust the seasoning with salt and pepper as needed. Garnish with freshly chopped parsley and serve hot over mashed potatoes, rice, or buttered egg noodles.