Golden-seared steak bites smothered in a creamy garlic sauce, served over fluffy mashed potatoes blended with butter and Parmesan. Rich, hearty, and ready in under 30 minutes.
1 lb sirloin steak, cut into 1-inch cubes
1 tbsp olive oil
2 tbsp butter, divided
4 garlic cloves, minced
3/4 cup heavy cream
Salt and black pepper, to taste
1 tbsp grated Parmesan (optional, for sauce)
Chopped parsley (optional)
Boil potatoes in salted water until tender, about 15 minutes. Drain and return to pot.
Mash with butter, warm milk, and Parmesan until smooth. Season and keep warm.
Heat oil and 1 tbsp butter in a skillet over medium-high. Season steak and sear in batches, 1–2 minutes per side. Set aside.
Reduce heat, add remaining butter and garlic. Sauté 30 seconds.
Stir in cream, simmer 2–3 minutes. Scrape the pan to release browned bits.
Return steak and juices to pan. Coat in sauce, simmer 1–2 minutes.
Serve steak and sauce over mashed potatoes. Garnish with parsley if desired.