Dinner · Part 2 of 3: Instructions
Garlic Butter Steak Bites with Creamy Parmesan Mashed Potatoes Step-by-step instructions

- Prep
- Cook
- Total
- Serves
- 4
Before you start
Before turning on the stove, organize and prep all your ingredients to ensure a smooth, stress-free cooking process. Peel and cube the potatoes into equal-sized pieces so they boil evenly. Mince the fresh garlic cloves and grate the parmesan cheese so they are ready to be stirred in at a moment's notice.
Cut the steak into uniform cubes, pat them thoroughly dry with paper towels, and let them sit at room temperature for no more than 30 minutes to take the chill off. Having everything measured and ready is crucial because the actual cooking phases happen very quickly.
Ingredients at a glance (5)
- 2 lb Yukon Gold potatoes, peeled and cubed
- 3/4 cup unsalted butter, divided
- 1/2 cup grated parmesan cheese
- 1 1/2 lb sirloin steak, cut into 1-inch cubes
- 4 cloves garlic, minced
Instructions
Boiling and Whipping the Parmesan Potatoes
- Boil the PotatoesPlace the peeled and cubed Yukon Gold potatoes in a large pot. Cover them with cold water and bring to a boil over high heat. Cook the potatoes until they are completely fork-tender, which should take about 15 minutes, then drain them thoroughly in a colander.Look for The potatoes should slide easily off a fork when pierced.Tip Starting the potatoes in cold water ensures they cook evenly from the edges to the center.
- Whip the PotatoesReturn the drained hot potatoes to the pot. Add half of the unsalted butter and the grated parmesan cheese. Mash or whip the ingredients together until the mixture is completely smooth, fluffy, and free of lumps, then cover and keep warm.Look for The potatoes should be velvety, creamy, and hold their shape.Tip Warm the butter slightly before adding it to keep the potatoes hot and fluffy.
The potatoes are ready when they are completely fork-tender and slide easily off a knife. Once mashed and whipped with the butter and grated parmesan cheese, they should look incredibly smooth, fluffy, and free of lumps, releasing a warm, comforting aroma of rich dairy and savory cheese.
Searing the Savory Steak Bites
- Sear the Steak BitesPat the cubed sirloin steak dry with paper towels. Heat a large cast-iron skillet over high heat until it is shimmering and extremely hot. Add the steak bites in a single layer and sear without moving for 2 minutes to form a deep golden-brown crust, then toss and cook for another 1 to 2 minutes.Look for A deep, caramelized crust should form on the bottom of the steak cubes.Tip Do not crowd the pan; cook the steak bites in batches if necessary to prevent steaming.
At the end of this phase, the steak bites should have a deep, caramelized, golden-brown crust on all sides. You will hear a loud, active sizzling sound from the skillet and smell the rich aroma of seared beef. The skillet should remain hot and dry, with no pooled moisture, ensuring the meat has seared rather than steamed.
Basting with Rich Garlic Butter
- Finish with Garlic ButterReduce the heat to medium-low. Add the remaining unsalted butter and the minced garlic to the skillet. Toss the steak bites continuously in the melting butter for about 1 minute, ensuring the garlic becomes fragrant without browning. Confirm the steak reaches an internal temperature of 145°F (63°C) and let the meat rest for 3 minutes. Serve the warm steak bites over the whipped parmesan potatoes, drizzling the rich garlic butter sauce from the pan over the top.Look for The butter should be melted, foamy, and highly fragrant with garlic.Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)Tip Move the pan constantly during this step to prevent the garlic from burning in the hot skillet.
The dish is complete when the butter has melted into a rich, golden sauce and the minced garlic is tender and highly fragrant without turning brown or bitter.
The steak bites should be fully coated in the glistening garlic butter, and the meat must reach an internal temperature of 145°F (63°C) before resting for three minutes.
Common mistakes
One common mistake is overcrowding the skillet when searing the steak bites. If too many pieces of meat are crowded together, they will release moisture and steam instead of searing, resulting in a gray, tough texture rather than a crisp, golden crust. Cook the steak in batches if your pan is not large enough.
Another frequent error is burning the garlic. Garlic burns very quickly under high heat, which imparts a bitter flavor to the butter sauce. Always lower the heat before adding the butter and garlic, and toss the meat constantly to distribute the heat evenly.
How to tell it’s done
To determine the perfect doneness, use an instant-read digital meat thermometer inserted into the thickest part of a steak bite. The beef is cooked to a safe and juicy medium-rare when it reaches an internal temperature of 145°F (63°C).
After reaching this temperature, remove the steak bites from the heat immediately and let them rest for at least 3 minutes. This resting period allows the muscle fibers to relax and the delicious savory juices to redistribute throughout the meat, ensuring every bite remains tender.
- Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest
Up next · Part 3 of 3
2 variations · storage & make-ahead · 4 answers · printable card
Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)