As posted on Boston.com

Ingredients:

• 4 thick slices bacon
• 2 tablespoons mayonnaise
• Squeeze of lemon juice, or to taste
• Salt and black pepper, to taste
• Pinch of crushed red pepper
• 1 small ripe avocado
• 4 thick slices old-fashioned white bread, toasted
• 1 tomato, thinly sliced
• 2 leaves romaine lettuce

1. In a large skillet, render the bacon over medium heat, turning several times, until it is golden brown. Transfer to paper towels.
2. In a shallow bowl, stir the mayonnaise, lemon juice, salt, black pepper, and red pepper. Halve the avocado, remove the pit, and scoop the flesh into the bowl of mayonnaise. With a fork, mash the mixture together until it is smooth.
3. Spread the 4 pieces of toast with some of the avocado mixture. To 2 slices, add bacon (halve them to fit the bread if necessary), sliced tomatoes, and lettuce. Cover with the other 2 slices, avocado spread down.