01 - In a shallow dish, combine the flour, salt, black pepper, and paprika. Dredge each cube steak through the seasoned flour mixture, coating both sides evenly and shaking off any excess. Reserve 2 tablespoons of the seasoned flour for the gravy.
02 - Set a large skillet over medium-high heat and add the vegetable oil along with 1 tablespoon of butter. Once the fat is hot and shimmering, carefully lay the dredged cube steaks in the pan. Sear 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 the heat to medium and add the remaining tablespoon of butter to the skillet. Toss in the thinly sliced onion and sliced mushrooms. Cook, stirring occasionally, for 6 to 8 minutes until the onions are soft and translucent and the mushrooms are deeply browned.
04 - Add the minced garlic and the reserved seasoned flour to the skillet. Stir continuously for about 1 minute to cook off the raw garlic flavor and toast the flour lightly.
05 - Slowly pour in the beef broth and Worcestershire sauce, stirring constantly while scraping up any browned bits from the bottom of the skillet. Pour in the milk and bring the liquid to a gentle simmer, allowing it to begin thickening slightly.
06 - Nestle the seared cube steaks back into the skillet, submerging them in the gravy. Cover with a lid, reduce the heat to low, and simmer for 20 minutes until the steaks are fork-tender and the gravy has thickened to a rich, coating consistency.
07 - Taste the gravy and adjust the seasoning with salt and pepper as needed. Garnish with chopped fresh parsley and serve hot alongside mashed potatoes, rice, or egg noodles.