Lay bottom slices (butter side down) on a cool cutting board or in a cold skillet. Layer cheeses, add bacon, drizzle with ranch. Add optional jalapeños or onions. Top with remaining bread slices (butter side up).

Step 5: Grill to Perfection
Heat skillet to medium-low. Cook sandwiches for 3–4 minutes per side until bread is golden and cheese melts. Flip gently and press lightly for full melt.

Step 6: Rest & Serve
Let sandwiches rest 1 minute before slicing. Cut diagonally and serve hot—cue the cheese pull.