Easy Crock Pot Round Steak with Mushrooms

Ingredients (7)

• 1.5-2 pounds round steak
• 1 package onion soup mix
• 1 large yellow onion, sliced
• 8 ounces mushrooms, sliced
• 2 cups low sodium beef broth
• 3 Tablespoons cornstarch
• Salt and pepper, to taste