• 4 slices thick-cut bacon
• 3 butter lettuce leaves, washed and dried
• 2 slices sourdough bread
• 2 tablespoons mayonnaise
• 2 tablespoons whole grain mustard
• 1 tablespoon lemon juice
• ½ teaspoon black pepper
• salt and pepper, for seasoning, if desired
• ½ avocado, thinly sliced