Making The Best Bacon Sandwich with Caramelized Onions is straightforward. Just follow these simple steps:

1. Cook the Bacon: In a skillet over medium heat, cook the bacon until crispy. This should take about 5-7 minutes. Remove the bacon and set it aside on a paper towel to drain excess grease.

2. Caramelize the Onions: In the same skillet, lower the heat to medium-low and add the butter and olive oil. Once melted, add the thinly sliced onions. Season with a pinch of salt. Cook gently for about 15 minutes, stirring occasionally, until the onions turn soft and golden brown. You can add a bit of sugar to accelerate the caramelization if desired.

3. Toast the Bread: While the onions are caramelizing, toast your bread slices in a toaster or another skillet until golden brown, about 3-4 minutes.

4. Assemble the Sandwich: On one slice of toasted bread, layer the crispy bacon. Top with the caramelized onions, making sure to spread them evenly.

5. Add Cheese: If desired, add slices of cheese over the onions. You can place the assembled sandwich back to the skillet to melt the cheese slightly for a gooey effect.

6. Season to Taste: Sprinkle some freshly cracked pepper over the cheese, and add any extras like greens or spreads if you wish.

7. Top It Off: Place the second slice of toast on top to complete your sandwich.

8. Cook or Press Down: If you want a grilled effect, gently press down on the sandwich and cook for another minute or two on each side until golden and crispy.

9. Slice and Serve: Cut the sandwich in half for easy handling and serve immediately while warm.