- Fry bacon until crisp. Drain on paper towels.
- Peel avocado, taking care not to remove bright green flesh just inside the skin. Cut in half and remove seed. In a bowl, mash avocado, then stir in lemon juice, salt and pepper. Butter two slices of bread. Spread avocado mixture on buttered sides of 2 brea
- Cut off bread crusts. Cut each sandwich into 4 triangles. Arrange on a serving plate, garnished with a lemon twist and parsley sprig.