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Porterhouse Steak Skillet with Spinach Horseradish Pesto

This Porterhouse steak skillet is topped with a spinach horseradish pesto and served up with roasted potatoes and mushrooms for an easy meal all in one pan!

This is what we actually ate for Valentine’s Day – alternatively now known in my house as the day I stabbed my husband with a chef’s knife.

More on that later.

*This post is sponsored by Flippa free shopping tool that brings all of your weekly circulars and coupons to your fingertips to easily find deals nearby and save money.
This Porterhouse steak skillet is topped with a spinach horseradish pesto and served up with roasted potatoes and mushrooms for an easy, complete meal!

I know I talked a big game about these pistachio crusted lamb chops for the big day but since I made that on the tail end of finishing off 8 pounds (yes, 8) of a leg of lamb I had slow cooked a couple of weeks before, I’ll be honest, we were lambed out.

So, beef it was.

There’s also something quite appealing about a one skillet meal.

Whether it’s a weeknight dinner or a special holiday, I’m always down with only having one dish to clean up after dinner and this Porterhouse steak skillet is exactly that.

It’s all about the layering.

Start with the potatoes since they take the longest, add the mushrooms next once the potatoes are starting to get all wrinkly and crispy and then the steak for the last few minutes.

It doesn’t take long at all for the steak to get a nice medium rare cook in a hot skillet!

This porterhouse steak skillet is an easy dinner with everything cooked in one pan.

The inspiration for this Porterhouse steak skillet actually came from Flipp, which helps to aggregate coupons and fliers from some of your favorite stores, organizes your grocery shopping list to maximize savings and even plans your store route based on what you need once you’re there with Store Mode, a new feature!

I’ve never really been a coupon person, I just don’t have the patience for sorting through all the mailings, cutting things out and then remembering what is on sale where.

Flipp does all this for you in one place.

Flipp App shopping list

My favorite Shopping List feature though, is Photo List – the automatic transcribing of your hand-written paper grocery list.

I’ll always be a pen and paper person so being able to snap a picture of my grocery list and having it transcribed into the app is the best!

Flipp App flyer feature

Using Flipp, I noticed that my favorite supermarket circular had mushrooms, spinach and potatoes on sale so this one skillet recipe was dreamed up to go along with the 2 Porterhouse steaks I had in the freezer from our bulk beef share.

I grabbed a few other necessities that were on sale as well and the result was $6.51 in savings, just from shopping with Flipp.

Can’t complain about saving $6+ on things I would’ve normally bought anyway!

Store Mode is a new feature that is still rolling out to stores across the US, it helps you organize your shopping trip by aisle based on your shopping list.

There’s also a Family Sync option so you can share your grocery list and updates with another member of your household, to help keep you on the same page as you shop.

This easy Porterhouse steak skillet is topped with a spinach horseradish pesto for a pop of brightness.

Back to the porterhouse steak skillet…

So we happily ate this meal on Valentine’s Day and drizzled the spinach horseradish pesto on everything.

It’s incredibly bright and spicy with that lovely kick horseradish always brings. If you like that kinda thing, you’ll probably like radish greens pesto and arugula pesto too as they’re both quite peppery as well.

We ate this on the couch while renting Keeping Up with the Joneses (which was ehh but Don Draper, I mean Jon Hamm was in it so I was down). Nothing like a romantic candlelit dinner, huh?

We paused the movie about 3/4 of the way through to clean up and start on dessert (apple crisp for him, lava cake for me).

Ps – if you want a variation on this meal, make the steak and mushrooms in the skillet as the recipe says but try these roasted pesto potatoes on the side instead!

Or reverse that, skip the mushrooms in the skillet and try air fryer mushrooms on the side instead.

Or, go spicy and do peri peri roasted potatoes.

And for a lower carb option, use turnips or cabbage instead of potatoes.

Skillet roasted turnips come out crispy and perfect just like potatoes and taste eerily similar!

Air fryer cabbage is a great option with its super crispy edges and intense garlic flavor.

This porterhouse steak skillet has roasted baby red potatoes and mushrooms all made in the same pan for an easy, impressive dinner.

And, dessert prep is when I stabbed my husband with my trusty 10 inch chef’s knife.

Nothing says Happy Valentine’s Day like blood pouring out of your elbow, huh?

It was obviously an accident but his facial expression when it happened was something I’ll never forget and now (that I know he’s not seriously injured) something I’ll probably literally LOL at for the rest of my life every V-Day.

Everything is cooked in one skillet for this Porterhouse steak skillet then topped with a bright and spicy spinach horseradish pesto.

Love this Porterhouse Steak Skillet recipe?

Check out these other one skillet recipe ideas: chicken artichoke olive skillet, smoky steak potato and pepper skillet and don’t forget dessert with this paleo salted chocolate chip cookie skillet!

If you prefer lamb for the holiday, lamb loin chops are the lamb equivalent of a porterhouse steak. Give this air fryer lamb chop recipe a try or, these pistachio crusted lamb chops!

Everything is cooked in one skillet for this Porterhouse steak skillet then topped with a bright and spicy spinach horseradish pesto.

Porterhouse Steak Skillet with Spinach Horseradish Pesto

This Porterhouse steak skillet is topped with a spinach horseradish pesto and served up with roasted potatoes and mushrooms for an easy, complete meal!
No ratings yet
Prep Time 5 minutes
Cook Time 30 minutes
Total Time 35 minutes
Servings 2 servings


For the steak skillet:

  • 1 pound Porterhouse steak or 2 smaller steaks
  • 12 ounces baby red potatoes washed
  • 8 ounces baby portobello mushrooms stems removed and sliced
  • 1 tablespoon butter divided
  • salt & pepper

For the pesto:

  • 2 cups baby spinach
  • 1/4 cup fresh basil leaves
  • 2 tablespoons prepared horseradish
  • 1 clove garlic
  • 1 tablespoon unsalted shelled pistachios
  • 2 tablespoons extra virgin olive oil
  • salt & pepper
  • water to thin


For the steak skillet:

  • Preheat oven to 450 degrees (use convection setting if you have it) and place 12 inch cast iron skillet  in the oven while preheating.
  • Add 1/2 tablespoon of butter to the hot skillet to melt. Place potatoes in the skillet and season generously with salt and pepper. Shake to toss in the butter and roast for about 15 minutes until starting to wrinkle and crisp up on the outside.
  • Add mushrooms to the skillet, season again with salt and pepper and roast for an additional 10 minutes.
  • Pat the steak dry, season liberally with salt and pepper. Turn oven to hi-broil setting. Add remaining 1/2 tablespoon butter to the skillet to melt. Place steak in the middle of the skillet and broil for about 2-3 minutes per side for medium-rare. Remove from oven and serve with pesto.

For pesto:

  • Add spinach, basil, horseradish, garlic and pistachios to a food processor. Pulse until finely chopped. Scrape down the sides. 
  • With the food processor running, slowly drizzle in the olive oil until smooth. Add water, 1 teaspoon at a time until you get desired consistency (more for a runnier pesto that can be drizzled). Season with salt and pepper to taste.

Nutrition Facts

Serving: 1SERVING | Calories: 807kcal | Carbohydrates: 21g | Protein: 62g | Fat: 52g | Saturated Fat: 19g | Polyunsaturated Fat: 26g | Trans Fat: 1g | Cholesterol: 209mg | Sodium: 364mg | Fiber: 3g | Sugar: 3g

This website provides approximate nutrition information for convenience and as a courtesy only. Nutrition information can vary for a variety of reasons. For the most precise nutritional data use your preferred nutrition calculator based on the actual ingredients you used in the recipe.

Cuisine American
Course Main Dishes
Keyword paleo, porterhouse steak skillet, spinach horseradish pesto, steak skillet, steak skillet with spinach pesto

Gina Matsoukas is the writer, founder, photographer and recipe developer of Running to the Kitchen — a food website focused on providing healthy, wholesome recipes using fresh and seasonal ingredients as much as possible. Her work has been featured in numerous media outlets both digital and print, including MSN, Huffington post, Buzzfeed, Women’s Health and Food Network.

Recipe Rating


Sunday 17th of September 2017

This was AMAZING!! Super easy & super delicious. I used a combination of red & russet potatoes & added extra mushrooms. I love that it was cooked in a cast iron skillet. Thank you for such a delicious recipe. My family said this is a definite 'make again'.

Running to the Kitchen

Tuesday 19th of September 2017

So happy your family liked it! :)

Lisa @ Wine & Glue

Monday 27th of February 2017

I'm a pen and paper person too, so that photo feature is amazing! I can't wait to check out Flipp, and this dinner too, obviously! Yummy!


Wednesday 22nd of February 2017

Such a cool app and I am loving this recipe! :)

Mary Ann | The Beach House Kitchen

Tuesday 21st of February 2017

That pesto sounds totally dreamy Gina! I think I'd want to put it on everything!

Sarah | Broma Bakery

Tuesday 21st of February 2017

What an awesome app! Got to try this next time I'm at the store :)