This slow cooker steak and mushrooms is one of those set it and forget it crockpot recipes that makes weeknight dinners so much easier. I love that you can throw everything in the slow cooker in the morning and come home to a hot, tender, flavorful meal that is completely gluten free, dairy free, and keto friendly. No canned soup required!

It's just simple whole ingredients that create the most delicious savory sauce.

The steak comes out incredibly tender after slow cooking all day and the mushrooms and onions soak up all of that amazing flavor from the sauce. I like to serve this over mashed potatoes so the sauce soaks right in, but it is equally good over rice or with roasted vegetables on the side.

This is the kind of recipe that makes people think you spent all day in the kitchen when really your slow cooker did all the work.

If you are looking for more slow cooker recipes you might also enjoy my Cheesy Slow Cooker Creamed Corn, this Slow Cooker Hawaiin Pork Tenderloin, my Slow Cooker Meatloaf, this Slow Cooker Barbecue Meatballs or my Gluten Free Slow Cooker Lasagna Soup recipes.

You can find all my meal recipes here: Gluten Free Meal Recipes

Instructions

Cut the steaks into 4-6 serving size pieces (if it's not already cut). Layer the steak pieces into the bottom of your crockpot.

Whisk together the brown sugar, coconut aminos or soy sauce, apple cider vinegar, Worcestershire sauce and minced garlic. Pour the mixture overtop of the steak.

Evenly top the steak with sliced mushrooms and sliced onion.

Cover the slow cooker and cook on low for 4-6 hours or high for about 2 hours. The steak needs to reach an internal temperature of at least 160 degrees when done.

When done, remove steak from the crockpot and using a slotted spoon remove the onion and mushrooms. Serve immediately.

Hint: I love to serve this recipe with mashed potatoes, my Instant Pot Garlic Ginger Green Beans or my Crispy Garlic and Rosemary Smashed Potatoes.

Substitutions

• Chuck Steak - instead of round steak you can use chuck steak or a mixture of both
• White Onion - you can replace the yellow onion with a white onion
• Gravy - if you would like to make gravy with the leftover juices in the slow cooker take ½ cup of the liquid and stir in 1 tablespoon cornstarch. Pour the mixture back into the slow cooker and stir to thicken.

Supplies

Storage

Store the leftovers in an air tight container in the refrigerator for up to 5 days.

To reheat put the steak on a plate and cover with a damp paper towel. Microwave in 30 second intervals until the steak is hot. Reheat the mushrooms and onion together in a bowl in the microwave in 30 second intervals.

Frequently Asked Questions

Ingredients

• Fresh Tomatoes
• Yellow Onion
• Unsalted Butter
• Carrots
• Fresh Basil
• Sea Salt

Instructions

In a dutch oven or pot on the stovetop over medium heat add the tomatoes, onion, unsalted butter, carrots, basil and sea salt.

Bring to a boil stirring occasionally and then let simmer for 30 minutes uncovered. Stir occasionally to combine the ingredients to make sure everything is cooking down evenly.

Using an immersion blender in the post blend the ingredients until a smooth sauce forms. If you don't have an immersion blender you can carefully use a regular blender or food processor.

Serve immediately over pasta or let cool to room temperature and store in the refrigerator in a sealed container for up to 5 days.

Hint: This sauce freezes really well. Use freezer safe containers or freezer safe bags and store in the freezer for up to 3 months.

Supplies

More Recipes You Might Enjoy

I get some of my ingredients from Thrive Market. Thrive Market has been a game changer for me eating gluten free. They have so many options I can't get at my rural grocery stores! Use this link to get 25% off your first order!

Storage

Store this tomato pasta sauce in an air tight container in the refrigerator for up to 5 days.

This sauce freezes really well! Use freezer safe containers or bags. If you using bags I like to lay them flat on a baking sheet, freeze them and then stack them in my freezer to save space.