Making a Sardine Sandwich is as easy as 1-2-3! Follow these detailed steps to create your delicious sandwich:

1. Prep the Bread: Start by toasting your bread slices until they are golden brown. You can use a toaster or a skillet for this.

2. Mix Sardines (Optional): In a bowl, mash the sardines gently with a fork. You can mix in mayonnaise and a squeeze of lemon juice for added flavor.

3. Layer Ingredients: On one slice of toasted bread, spread the sardine mixture (if you prepared it).

4. Add Avocado: Layer the sliced avocado on top of the sardines, giving your sandwich a creamy texture.

5. Add Vegetables: Place the lettuce leaves and tomato slices on top of the avocado.

6. Season: Add a pinch of salt and pepper for seasoning.

7. Top It Off: Place the second slice of toast on top to complete the sandwich.

8. Cut and Serve: Slice the sandwich in half for easy eating, and plate it nicely.