I start by cutting the steak into bite-sized cubes and patting them dry. Then I season them generously with salt, pepper, and smoked paprika. Dry steak helps me get that perfect golden crust when searing.
I heat olive oil in a large pan until hot and quickly sear the steak pieces. I make sure not to overcrowd the pan so each bite browns nicely. Once done, I remove them and set them aside to keep them juicy.
In the same pan, I melt butter and sauté garlic until fragrant. I stir in Dijon mustard, chili flakes, and lemon juice for a bold flavor. This creates a rich, tangy cowboy butter base for the dish.
I add cooked tortellini directly into the sauce and gently toss it. The pasta absorbs all that buttery garlic flavor beautifully. I let it simmer for a minute so everything blends perfectly.
I return the steak bites to the pan and mix everything together. I sprinkle Parmesan and parsley on top for richness and freshness. Then I serve it hot straight from the pan for the best taste.