This Best Swiss Steak is tender, flavorful, and smothered in a rich tomato gravy with onions, peppers, and mushrooms. A comforting, hearty meal perfect for weeknights or Sunday dinners!
In a large resealable plastic bag, combine the flour, salt, pepper, and garlic powder. Add the steak pieces a few at a time, shaking gently to coat them evenly. Set the coated steaks aside.
Heat the avocado oil in a heavy oven-safe pot or cast-iron Dutch oven over medium-high heat. Brown the steaks on both sides until a nice crust forms, then transfer them to a plate.
Lower the heat to medium, then add the onion, celery, bell pepper, and mushrooms to the same pot. Sauté for 6-7 minutes, stirring occasionally, until the vegetables soften. Add a little more oil if needed.
Stir in the garlic and tomato paste; cook for another minute until fragrant.
Pour the diced tomatoes, beef broth, Worcestershire sauce, thyme, sugar, and celery salt into the pot. Stir gently, scraping up the flavorful browned bits from the bottom.
Return the browned steaks to the pot, making sure they're fully submerged in the sauce.
Cover and bake in the preheated oven for 1½ to 2 hours, until the meat is fork-tender.
Once done, carefully remove the pot from the oven and transfer the steaks to a plate, leaving the gravy in the pot.
In a small bowl, combine the cornstarch and water to create a slurry. Stir this into the gravy.
Place the pot back on the stovetop and bring the gravy to a gentle boil over medium heat, stirring constantly until it thickens.
Serve the steaks generously topped with gravy alongside mashed potatoes, buttered egg noodles, or cooked white rice.
Notes
Sandy’s tips:
Slow cooker method: After browning the meat and sautéing the vegetables as described, transfer everything to your slow cooker. Reduce the beef broth to 1 cup. Cook on LOW for 6-8 hours until the meat is tender. Thicken the gravy with the cornstarch slurry before serving.
Stovetop method: After browning the steaks and vegetables, simmer covered on low heat for about 1½-2 hours, checking occasionally, until the meat reaches desired tenderness. Thicken the gravy as described above.
Make ahead: This dish tastes even better the next day as the flavors continue to meld. Store leftovers in an airtight container in the fridge for up to 3 days. Reheat gently on the stovetop or in the microwave.
Freezer-friendly: Swiss steak freezes beautifully. Cool completely, then transfer to a freezer-safe container and freeze for up to 3 months. Thaw overnight in the fridge and reheat on the stovetop.
Use different vegetables: Feel free to swap in whatever vegetables you have on hand, such as carrots, parsnips, or even a handful of frozen peas added at the end would all work well.