01 -
In one bowl, toss the cubed ribeye with beef tallow and Cajun seasoning until well coated. In another bowl, do the same with the shrimp, coating them evenly with tallow and seasoning.
02 -
Fire up your grill to high heat, around 400°F. Make sure the grates are clean and ready for cooking.
03 -
Place the seasoned steak cubes on the hot grill and cook for 3-4 minutes, turning as needed to get a nice sear on all sides. Cook to your preferred doneness, then remove and let rest.
04 -
Heat a cast iron skillet on the grill with a bit of beef tallow. Add the seasoned shrimp and cook for 1-2 minutes until they turn pink and are cooked through. Remove and keep warm.
05 -
Cook the penne pasta according to package directions until al dente. Before draining, save about 2 ounces of the starchy pasta water. Drain the pasta and set aside.
06 -
Place the room temperature butter in the center of your serving bowl and flatten it out. Add the hot pasta on top and toss it around to melt the butter and coat the noodles.
07 -
Sprinkle the Romano and Parmesan cheeses over the pasta, then add the reserved pasta water. Toss everything together until you get a silky, creamy sauce that coats each noodle.
08 -
Top the creamy pasta with the grilled steak and shrimp. Sprinkle with fresh chopped chives for color and flavor, then serve immediately while everything is hot.