Preheat your oven to 400 degrees f. and line a rimmed baking sheet with parchment paper.
Arrange your bacon slices without overlapping onto the prepared sheet pan.
Bake in the preheated oven for 12-15 min, or until nice & crispy, and done to your liking.
Alternatively you can cook the bacon on the stovetop.
Set aside on a paper towel lined plate to absorb any excess grease.
Cut your apples into 1/2 inch thick slices.
To prevent the apple from browning, rub a lemon wedge over both sides of the apple slices.
To assemble your apple sandwiches place one apple slice on a plate or serving board. Top with crispy bacon and cheddar, then sandwich with a second slice of apple.
Sprinkle with chopped pecans if desired for texture.
Repeat with remaining ingredients.
Serve and enjoy!