Cut the steak into two equal pieces. Keeping them equal sizes will ensure they take the same cooking time. Season with 2 tsp. salt, pepper, and paprika.
Roughly chop asparagus in half and add a quarter to the center of 2 large pieces of foil. Reserve remaining half.
Add cut and seasoned steak to each piece of foil. Cut potatoes and onions roughly to 1”-1½” pieces. Season generously with remaining salt and add half to each foil piece.
Top with remaining asparagus. Add in a Tbsp of butter and a crushed garlic clove to each foil and wrap it up tight.
Take a second piece of foil for each packet and place the packet seam side down and wrap again. This helps keep all the juices in.
Create a campfire, and allow the coals to get hot. Toss packets in the fire for approximately 30 minutes, or until desired doneness.