Making the Cheddar and Bacon Turkey Melt on Sourdough is simple with these easy steps:

1. Prepare the Bread: Lay out the slices of sourdough bread on a clean surface.
2. Mix Condiments: In a small bowl, mix the mayonnaise and Dijon mustard, if using. Spread this mixture evenly on one side of each slice of bread.
3. Layer Ingredients: On two slices of bread (the unspread side), layer the turkey slices, followed by the bacon and cheddar cheese.
4. Season: Sprinkle with salt and pepper to enhance the flavors.
5. Top the Sandwich: Place the remaining slices of bread on top, spread side up, to form two sandwiches.
6. Heat the Pan: In a skillet over medium heat, melt the butter until it bubbles.
7. Cook the Sandwiches: Place the sandwiches in the pan. Cook for about 4-5 minutes until golden brown, then carefully flip them over.
8. Melt the Cheese: Cook the other side for another 4-5 minutes, pressing down slightly to ensure the cheese melts thoroughly.
9. Check for Doneness: Once both sides are golden and the cheese is melted, remove the sandwiches from the skillet.
10. Slice and Serve: Cut the sandwiches in half and serve immediately.

These straightforward instructions will guide you in creating a delicious Cheddar and Bacon Turkey Melt on Sourdough that everyone will love.