Cook bacon in a skillet coated with vegetable cooking spray over medium heat 3 minutes per side or until browned. Drain on paper towels.
Combine mayonnaise and dill; spread mayonnaise evenly on 1 side of 4 bread slices. Top evenly with bacon slices and tomato slices; sprinkle with salt and pepper. Top evenly with cheese and lettuce. Cover with remaining bread slices.
Note: Canadian bacon is similar to lean ham. It has less fat and cholesterol than bacon.
Per serving with low-calorie bread: Calories 291; Fat 13g; Carb 25g; Fiber 6.3g.