Heat a large skillet over medium-high heat and add 1 tablespoon of olive oil.
3 tbsp olive oil
Place the cut sirloin steak pieces into a large bowl and pat dry with a paper towel. This will help the seasonings stick and help to form a nice crisp crust on the meat when cooking.
3 pounds sirloin steak
In a small bowl, combine the seasonings and mix together.
Sprinkle it over the steak. Toss the pieces to combine and ensure it is evenly coated.
1 tsp salt, 1/2 tsp black pepper, 1/2 tsp cayenne pepper, 1/4 tsp garlic powder
Once the skillet is hot, work in small batches to sear the steak in a single layer until browned, about 3-5 minutes on both sides. Transfer the cooked pieces onto a plate. Add more oil as needed to finish searing the remaining batches of steak.
Once all the steak is browned and transferred to a plate, lower the heat to medium. Then add and melt the butter.
6-8 tbsp unsalted butter
Once the butter is melted, add the minced garlic and saute until fragrant, about 1 minute.
6 cloves garlic
Add the steak back to the skillet and stir to coat in the melted garlic butter.
Remove from the heat and then garnish with fresh chopped parsley.
3 tbsp fresh chopped parsley for garnish
Serve with mashed potatoes and a side of veggies if desired.