Swiss Steak is made from round steak and served in a gravy with mushrooms. It's often made with a tomato base, but this version uses a beef broth base instead.
Pound meat with a meat mallet on both sides, just enough to tenderize. Mix salt and pepper with the flour. Dredge meat in flour mixture.
Heat olive oil in a large oven-safe skillet and brown meat on both sides. Remove meat to a plate and cover to keep warm.
Add another tablespoon of olive oil to the skillet and saute onions and mushrooms until tender and lightly browned.
Add 1/2 cup of the broth to the pan to deglaze any bits off the bottom.
In a separate bowl, whisk together soup and remaining broth. Strain out the mushrooms that come in the soup and discard. Add broth/soup mixture to the skillet and bring to a boil.
Add the meat back to the skillet, turning to coat. Nestle the meat beneath the gravy mixture.
Bake, covered, for 2 hours.
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Notes
To make this dish in the crockpot, simply follow all of the instructions then add everything to the slow cooker and cook on low 6 hours.
Straining the mushrooms out of the golden mushroom soup. This step is helpful when you have mushroom hating family members, it makes it easier to eliminate the possibility of mushrooms hitting their plate.
If you do not have a cast iron or oven-safe skillet, simply transfer everything to a casserole dish for baking.