Caramelized Ribeye Steak with Creamy Mashed Potatoes – Date Night Magic
This Caramelized Ribeye Steak with Creamy Mashed Potatoes brings steakhouse magic to your kitchen—juicy ribeye, sweet golden onions, and silky mashed potatoes make this perfect for a cozy date night at home.
Equipment
- Large cast-iron skillet
- Medium pot
- Colander
- Potato masher or hand mixer
- Tongs
- Sharp knife and cutting board
- Measuring spoons and cups
- Instant-read thermometer (optional)
Ingredients
- 1 lb ribeye steak (1–1¼ inches thick)
- 1 yellow onion, thinly sliced
- 2 cloves garlic, minced
- 1 tbsp olive oil
- 2 tbsp unsalted butter (divided)
- 1 tsp kosher salt (divided, plus more to taste)
- ½ tsp black pepper, freshly ground
- 1 tsp Italian seasoning or dried thyme/rosemary blend
- 1 tsp Worcestershire sauce (optional)
- 2 lbs Yukon Gold potatoes, peeled and chunked
- 4 tbsp unsalted butter (for potatoes)
- ½ cup heavy cream (or half-and-half)
- ¼ cup sour cream or cream cheese
- 2 cloves garlic, minced or 1 tsp garlic powder
- ½ tsp black pepper (for potatoes)
- Fresh parsley or chives, for garnish
- Extra butter, for serving (optional)
Instructions
- Place potatoes in a pot, cover with cold water, add salt, and boil until fork-tender (12–15 minutes).
- Pat ribeye dry and season all over with salt, pepper, and Italian seasoning. Let sit at room temp while onions cook.
- In a skillet over medium heat, cook onion in olive oil and 1 tbsp butter with a pinch of salt. Stir often for 10–15 minutes. Add garlic and cook another 30–60 seconds. Push aside or transfer to bowl.
- Raise heat to medium-high. Add 1 tbsp butter. Sear ribeye 3–5 minutes per side until your preferred doneness (130°F for medium-rare). Add Worcestershire sauce at the end if using.
- Transfer steak to a plate, loosely tent with foil, and rest for 8–10 minutes.
- Drain potatoes. Return to pot and mash with butter, cream, sour cream, garlic, salt, and pepper until smooth and fluffy. Add more cream if needed.
- Return onions to the skillet. Stir in pan juices. Add a splash of broth or butter if pan is dry. Keep warm.
- Slice rested steak against the grain. Plate mashed potatoes, top with steak, spoon over caramelized onions and pan juices. Garnish and serve immediately.