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Pan Seared Steak with Mushrooms over head view.

Pan Seared Steak with Mushrooms

Pan Seared Steak with Mushrooms is an easy skillet recipe made with grass-fed butter and thyme and it’s a recipe that is also gluten free, low carb, paleo, keto and Whoel30 friendly. Delicious steak in just 15 minutes!
Course Main Course
Cuisine American
Keyword dinner, gluten-free, low-carb, meat, paleo, steak, whole30
Prep Time 10 minutes
Cook Time 8 minutes
Total Time 18 minutes
Servings 2 people
Calories 411kcal


For the mushrooms

For the Steak

  • 2 lean New York Steak strip steaks
  • Coarse salt to taste
  • tablespoons  grass-fed butter
  • cloves garlic smashed (don’t mince the cloves because it will burn fast)
  • sprigs fresh thyme


  • Remove the steaks from the fridge about 30 minutes to 1 hour before cooking. Place them on a paper towel-lined cutting board and pat them dry with paper towels. Then, season well all sides of the steaks with coarse salt and set aside.
    overhead view of raw steak on a wooden board
  • In a 12-inch cast iron skillet over medium heat, add olive oil and butter, mushrooms, garlic and salt. Cook for about 3 minutes or until tender. Set aside on a plate.
    overhead view of cast iron containing mushroom, garlic and butter
  • Increase the heat to high and let it heat up for about 3 minutes. When the pan smokes just a bit, it’s a sign that it’s properly heated. Place the steaks in the hot skillet and cook for about 2 minutes each side or until the steaks get a nice crust.
    close up view of steaks in a cast iron skillet
  • Now add butter, garlic and thyme to the skillet. Flip the steaks again and tilt the pan to help the butter spread on the skillet. Using a spoon, pour butter over the steaks. Flip again the steaks and check the internal temperature of the steaks. For rare is Medium rare is 135 degrees, medium = 145 degrees, medium well = 150 degrees and well done = 160 degrees. The totally cooking time for my steak was about 8 minutes. It will depend on how you prefer your steak to be (rare, medium, medium well or well done).
    overhead view of steak in a cast iron skillet
  • When the steaks get to thedesired cooking temperature, bring back the mushrooms and serve immediately with some roasted green beans, asparagus mushed cauliflower and/or rice cauliflower.
    overhead view of steak with mushroom in a cast iron skillet



For more ONE-PAN meals? Here is a list with lots of low-carb, gluten-free and Whole30 one-pan recipe for you to make during your busy week.
Watch the Web Story HERE.


Serving: 1/2 | Calories: 411kcal | Carbohydrates: 6g | Protein: 20g | Fat: 35g | Saturated Fat: 16g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 6g | Cholesterol: 85mg | Sodium: 214mg | Potassium: 599mg | Fiber: 1g | Sugar: 2g