Tender Sirloin Steak Braised in Onion & Mushroom Gravy

If you think sirloin steak has to be tough, you’ve got to try this low-and-slow braising method! This homemade Sirloin Steak with Onion & Mushroom Gravy is incredibly tender because the steaks are slowly cooked right in that rich, savory gravy until they practically melt in your mouth! We start by searing the sirloin steaks in a hot pan, building up all those delicious browned bits and flavor in the bottom of the pan. Then we use that flavorful fond to make a homemade onion and mushroom gravy. Once the gravy is ready, the seared steaks go right back into the pan, get nestled down into that gravy, and everything is covered and placed in the oven to cook low and slow for about two hours. The result is amazingly tender sirloin steak that’s infused with all that rich onion and mushroom flavor. And let me tell you about that gravy! It’s deep, rich, savory, and absolutely packed with flavor from the seared steak. Spoon it over some creamy mashed potatoes, grab a dinner roll, and you’ve got the kind of old-fashioned comfort-food supper that makes you want to go back for seconds. This is a simple, hearty Southern-style steak dinner that’s perfect when you’re craving something comforting and homemade. If you’ve never braised sirloin steak in gravy before, this is one you’re going to want to try! 👉 Shop the things we use in our kitchen on Amazon: https://www.amazon.com/shop/backporch... 👉 Visit our Etsy shop: http://www.etsy.com/shop/BackPorchCookin Disclosure: As an Amazon Associate, we earn from qualifying purchases at no additional cost to you. If you make this Sirloin Steak with Onion & Mushroom Gravy, let me know how it turned out in the comments! And if you’re new here, welcome to Back Porch Cooking and Reminiscing! We love good food, old-fashioned recipes, and sharing a little storytelling along the way. Be sure to subscribe and come on back to the porch! Ingredients For the Steak: 1.5 lbs top sirloin steak (cut into portion steaks, ~3/4 to 1-inch thick) 2 tbsp olive oil 1/2 tsp bacon grease 1 tsp garlic powder 1 tsp onion powder Salt and coarse black pepper to taste For the Skillet Gravy: 1 large yellow onion, thinly sliced 8 oz fresh cremini or white button mushrooms, sliced 1 tbsp unsalted butter 2 tbsp all-purpose flour 2 cups beef broth (warm) 1 splash Worcestershire sauce Instructions 1. Prep & Pre-heat: Preheat your oven to 350°F. Pat the sirloin steaks dry with paper towels. Season both sides generously with salt, coarse black pepper, garlic powder, and onion powder. 2. Hard Sear the Bare Beef: Heat 2 tablespoons of olive oil along with 1/2 teaspoon of bacon grease in an oven-safe skillet (like cast iron) over medium-high heat. Once hot, add the steaks and give them a hard sear for about 2 minutes per side to build a deep crust and flavor-packed pan drippings. Remove the steaks from the skillet and set aside on a plate. 3. Sauté the Vegetables: Lower the skillet heat to medium and melt in 1 tablespoon of butter. Add the sliced onions and mushrooms directly into the hot fat and pan drippings. Sauté for 6 to 8 minutes until softened and browned, scraping up any fond stuck to the bottom of the skillet. 4. Build the Pan Roux: Sprinkle 2 tablespoons of flour evenly over the sautéed onions and mushrooms. Stir constantly for 1 to 2 minutes to cook out the raw flour taste and brown the roux. 5. Simmer the Gravy: Slowly whisk in the warm beef broth and a splash of Worcestershire sauce. Bring to a gentle simmer for 2 to 3 minutes until the gravy thickens smoothly. Taste and adjust seasoning with extra salt or black pepper if needed. 6. Assemble & Oven Braise: Nestled the rested steaks (along with any accumulated juices from the plate) right back into the gravy in that same skillet. Spoon gravy over top to smother the meat, then cover the skillet tightly with its lid or aluminum foil. 7. Bake: Transfer the covered skillet to the oven and braise at 350°F for 1 hour and 50 minutes to 2 hours until the beef is fork-tender. Serve hot over mashed potatoes, rice, or alongside warm buttermilk biscuits. #SirloinSteak #SteakAndGravy #SouthernCooking #ComfortFood #HomemadeGravy #OnionMushroomGravy #EasyDinner #SouthernFood #OldFashionedCooking #SteakRecipe #OvenBakedSteak #BackPorchCooking #steak