Prepare the crock pot by spraying the liner with cooking spray or line it with a slow cooker liner. Place the cube steaks in the bottom of the slow cooker. Sprinkle with 1 teaspoon of Montreal steak seasoning.
Heat oil in a large skillet over medium heat. Add onions and mushrooms, and saute for 5 minutes, until the onions and mushrooms are dry and beginning to brown.
Stir in flour and 1 teaspoon Montreal steak seasoning, and cook for 1 - 2 minutes. Add broth and Worcestershire sauce to deglaze the skillet, stirring to smooth any lumps, and bring to a simmer.
Pour the onion and mushroom skillet sauce over the cube steaks. Add lid and slow cook the cube steaks for 6 to 7 hours on low or 3 to 4 hours on high.
When done, use tongs to remove the steaks to a plate or serving dish. Stir in the heavy cream, until thickened. Spoon mushroom cream sauce over the steaks before serving.
Notes
The cube steak gravy will be thin at first; keep stirring until it thickens.
Cube steak and potatoes: add cubed potatoes to the slow cooker for the last hour of cooking.
Add other vegetables to the crock pot in the last hour, such as carrots and celery.
Make them spicy by adding a few dashes of hot sauce or your favorite spices.
Storing Instructions:
In the fridge, store cubed steaks in an airtight container or wrap them tightly with plastic wrap. Store in the refrigerator for up to 3 days.
For the gravy, store it in a separate airtight container or jar and refrigerate for up to 5 days.
In the freezer, slow cooker cube steak can be frozen for up to 3 months. Wrap each steak individually in plastic wrap and place it in a freezer bag or airtight container.
To reheat country style steak, place it in a covered dish and bake at 350°F until heated through.
For the gravy, heat in a saucepan over low heat until warm. You can also reheat both of them in the microwave for 2 to 3 minutes.