In a large bowl, combine ground turkey, hot sauce, cumin, chile powder, paprika, garlic, salt and pepper. Use your hands to bring the mixture together and incorporate all the ingredients into the ground turkey. Form the meat into 4 patties.

Add the patties to a hot grill or grill pan and cook for approximately 5 minutes per side, until the meat is cooked through. Top each patty with one slice of Castello Burger Blue cheese and close the grill. Allow the cheese to melt, approximately 2 minutes. Remove patties from grill and rest. Toast the buns on the grill until golden brown.

To assemble the burgers, add the patties with melted cheese to the bottom halves of the toasted buns. Top with one ring of pineapple on each burger and a handful of arugula. Top with the other half of the toasted buns. Serve immediately.