Begin by boiling a large pot of salted water over high heat. Once boiling, add the cheese tortellini and cook for 3-4 minutes or until they float to the surface and are al dente. Reserve ½ cup of pasta water before draining tortellini in a colander, then set aside.

While the tortellini is cooking, pat the steak dry with paper towels and season generously with Cajun seasoning, smoked paprika, garlic powder, salt, and black pepper. In a large skillet, heat 2 tablespoons of olive oil over medium-high heat. Add the steak bites and sear for 2-3 minutes on each side until a golden crust forms. Remove from skillet and let rest.

In the same skillet, reduce heat to medium and add unsalted butter. Once melted, stir in minced garlic and sauté for about 30 seconds until fragrant. Mix in red pepper flakes, Dijon mustard, and lemon juice to form a zesty cowboy butter sauce.

Return the cooked steak bites and drained tortellini to the skillet with the cowboy butter sauce. Toss everything together, gradually adding reserved pasta water to create a creamy sauce consistency. Stir in grated Parmesan cheese until melted and well incorporated.

Plate the One-Pan Cowboy Butter Tortellini Steak Bites while hot, finishing with extra cheese and fresh herbs for a pop of color. Enjoy this hearty meal right away for the best experience.