Begin by cutting the steak into 2–3 inch pieces and patting them dry with a paper towel. Drizzle the pieces with avocado oil and rub in the steak seasoning, coating all sides thoroughly.

Heat a large skillet over medium-high heat until hot, then sear the steak pieces for 3-4 minutes per side until they achieve a beautiful brown crust and reach your desired doneness. Once done, transfer the steak to a plate and cover it loosely with foil.

Reduce the heat to medium and add 4 tablespoons of butter and half of the minced garlic (5 cloves) to the same skillet. Sauté for about 1-2 minutes, or until the garlic is fragrant and lightly golden, ensuring it doesn't burn.

Return the seared steak bites to the skillet, tossing them in the garlic butter to coat evenly. After a minute, remove the pan from heat and keep the steak warm, covered with foil.

Bring a large pot of salted water to a rolling boil. Add the fettuccine noodles and cook according to the package instructions, usually around 10-12 minutes, until al dente. Stir occasionally to prevent sticking. Once cooked, drain the pasta in a colander and reserve about 1 cup of the pasta water.

In the same skillet used for the steak, melt the remaining 2 tablespoons of butter over medium heat. Add the remaining 5 cloves of minced garlic and sauté for about 1 minute until fragrant.

Pour in the heavy cream and half and half, bringing the mixture to a gentle simmer. Gradually add the freshly grated Parmesan cheese, whisking constantly until the sauce is creamy and smooth, which should take about 3-4 minutes.

Once the Alfredo sauce is ready, add the drained fettuccine to the skillet, tossing it gently to ensure every strand is coated in the creamy sauce. If the sauce is too thick, gradually add some reserved pasta water until you reach your desired consistency.

Carefully plate the fettuccine Alfredo, then top it with the garlic butter steak bites. Sprinkle additional freshly grated Parmesan cheese and diced green onions on top for garnish, adding a vibrant touch and enhancing presentation.

Serve your delightful meal warm, and enjoy the wonderful amalgamation of flavors that make this Garlic Butter Steak with Parmesan Alfredo so irresistible!