
Beef Steak with Roasted Tomatillo-Rosemary Sauce, Scallion Mashed Potatoes, and Seared Chayote
An original beef dish featuring a juicy seared steak topped with a vibrant roasted tomatillo and rosemary sauce. It is served with scallion mashed potatoes and skillet-seared chayote for a fresh yet comforting contrast.
Ingredients
- 680 g beef sirloin or strip steak (en 4 pieces of grosor medio)
- 450 g tomatillos (without peel and lavados)
- 700 g Yukon Gold potatoes (peladas and diced)
- 500 g chayotes (en medias lunas delgadas)
- 80 g scallions (finely slices, separando parte blanca and verde)
- 18 g garlic (4 cloves for the sauce and 2 for the chayotes)
- 6 g fresh rosemary (finely chopped)
- 180 ml beef stock (for the sauce)
- 120 ml heavy cream (for the puree)
- 60 g unsalted butter (divided)
- 45 ml olive oil (divided)
- 15 ml apple cider vinegar (for the sauce)
- 10 g honey (for equilibrar the acidez)
- 10 g salt (or to taste, divided)
- 4 g black pepper (freshly ground, divided)
Nutrition facts
per serving
Approximate nutritional information. Estimated from the recipe’s ingredients and amounts, using standard reference nutrition values. It may vary with brands, sizes and cooking method. For guidance only; not a substitute for medical or dietary advice.
Allergens
Instructions
- 1
Preheat the oven to 425 °F / 220 °C. Place the tomatillos, the white parts of the scallions, and 4 garlic cloves on a sheet pan. Add 1 tablespoon olive oil, 1/2 teaspoon salt, and 1/4 teaspoon black pepper. Toss well and roast for 18 to 20 minutes, until the tomatillos are soft with browned edges.
- 2
While the vegetables roast, place the potatoes in a pot with cold water and 1 teaspoon salt. Bring to a boil, reduce to medium heat, and cook for 15 to 18 minutes, until very tender.
- 3
Season the steaks with the remaining salt and pepper. Let them sit at room temperature for 10 minutes while you continue with the sides.
- 4
Drain the potatoes and return them to the hot pot for 1 minute to remove excess moisture. Add the heavy cream, 2 tablespoons butter, and the green parts of the scallions. Mash until smooth but still rustic. Adjust with salt and pepper to taste. Keep warm.
- 5
Transfer the roasted tomatillos, roasted scallions, roasted garlic, beef stock, apple cider vinegar, honey, and rosemary to a blender. Blend until smooth. Pour the sauce into a small saucepan and cook over medium heat for 4 to 5 minutes. Whisk in 1 tablespoon butter for shine and keep warm.
- 6
Heat a large skillet over medium-high heat. Add 1 tablespoon olive oil and sear the chayote slices for 4 minutes without moving them too much. Add the remaining 2 minced garlic cloves, cook 1 minute more, and season with a pinch of salt and pepper. Remove and set aside.
- 7
In the same skillet, add the remaining tablespoon of olive oil. Once very hot, cook the steaks for 3 to 4 minutes per side for medium, or until they reach an internal temperature of 135 °F / 57 °C. For a more cooked result, bring them to 145 °F / 63 °C. Remove from the heat and let rest for 5 minutes.
- 8
Serve a bed of scallion mashed potatoes on each plate. Place the steak on top or alongside, spoon over the roasted tomatillo-rosemary sauce, and finish with the seared chayote. Add a little extra freshly ground black pepper if desired.
Chef tips
For a deeper sauce flavor, let a few tomatillos brown well on the tray. If your steaks are very thick, finish them in a 400 °F / 205 °C oven for 3 to 5 minutes after searing.
Substitutions
You can use ribeye, top sirloin, or beef tenderloin. Chayote can be replaced with zucchini, and heavy cream can be swapped for evaporated milk for a lighter mash, though it will be less rich.
What I used to make it
Generic kitchen tools that work for this recipe. You don’t need to buy anything to make it.
Illustrative imageNinja Professional BL610 Blender
Smoothies, sauces and soups
- Smoothies, sauces and soups
- Easy-to-wash jar
- Check the power and jar size
Illustrative imageCosori Pro LE 5 Qt Air Fryer
Browning and baking with little oil
- Browns food with very little oil
- Handy for vegetables, chicken and reheating
- Check the basket capacity
Illustrative imageTempPro TP19H Digital Thermometer
Checking doneness of meat and chicken
- Checks doneness of meat and chicken
- Quick reading
- Clean the probe after each use
As an Amazon Associate, I earn from qualifying purchases.
Ratings & reviews
Sign in to rate this recipe
Sign inRelated recipes

Beef Stew
140 min

Grilled Steak
20 min

Cocoa-Pepper Crusted Beef Medallions with Roasted Cauliflower Mash
60 min

Beef Steak with Black Cherry Pepper Sauce, Rustic Rutabaga Mash and Sautéed Green Beans
60 min

Beef Steak with Pumpkin Seed Crust and Warm Roasted Tomato Oregano Sauce
50 min

Pomegranate-Rosemary Glazed Beef over Toasted Cauliflower Couscous
45 min