This is one of those fusion type things I love to do so much. A cross between a fajita and a grilled cheese. Because, in our world, it's totally normal. A beautiful fajita spice mix rubbed all over beef fillet steaks, then seared to your liking and sandwiched between crusty sourdough bread with chargrilled capsicums/peppers, onions, creamy avocado, sour cream and warm melty cheese.