Begin by seasoning the steak pieces with salt and pepper, ensuring they are evenly coated.
In a large skillet, melt 2 tablespoons of butter over medium-high heat. Once hot, add the steak bites in a single layer, making sure not to overcrowd the pan. Sear for about 2-3 minutes on each side until browned and cooked to your desired doneness.
Remove the steak bites from the skillet and set them aside. In the same skillet, add the remaining 2 tablespoons of butter. Once melted, stir in the minced garlic, thyme, and rosemary, cooking for about 1 minute until fragrant.
Return the steak bites to the skillet, tossing them in the garlic butter mixture. Cook for an additional minute, then remove from heat and set aside.
Meanwhile, bring a large pot of salted water to a boil. Add the cheese tortellini and cook according to package instructions, typically around 3-5 minutes, until they float to the surface. Drain and set aside.
In a separate saucepan, combine the heavy cream, garlic powder, and nutmeg over medium heat. Stir frequently until it begins to simmer.
Add the grated Parmesan cheese to the cream mixture, stirring until melted and the sauce is smooth.
Fold the cooked tortellini into the Alfredo sauce, ensuring they are well coated.
To serve, plate a generous portion of the Alfredo tortellini and top with the garlic butter steak bites. Garnish with chopped parsley for a pop of color and flavor.