01 - Place bacon slices in a skillet over medium heat and cook until crisp, turning as needed. Remove bacon and drain on paper towels.
02 - In a mixing bowl, combine mayonnaise, Dijon mustard, lemon juice, salt, and pepper. Stir until fully blended.
03 - Lay each flour tortilla flat on a clean surface. Evenly spread a thin layer of dressing over each tortilla.
04 - Distribute chopped romaine lettuce, sliced tomatoes, 2 slices of cooked bacon, and optional avocado and red onion evenly onto each tortilla.
05 - Fold in the sides of each tortilla, then roll up tightly to secure all fillings inside.
06 - Wrap each assembled BLT wrap tightly in parchment or foil. Refrigerate for up to 3 days for meal prep.