01 -
In a cold pan, place bacon and heat on medium. Cook till it's crunchy, then rest on paper towels. Leave the bacon grease in the pan.
02 -
Spread pesto on one side of all bread slices. On two of them, stack cheese, tomatoes, and bacon. Finish by placing the other bread slice on top with the pesto side facing inward.
03 -
Warm up your pan on medium. Spread butter on the top of the sandwiches, then place them butter-side down. Let them cook for about 3-4 minutes till golden.
04 -
Add butter to the uncooked side, flip the sandwiches, and toast for another 2-3 minutes. Remove when the bread's crisp and the cheese is gooey. Let them cool for a minute or two before you cut them.