Begin by toasting your bread of choice for about 3-4 minutes until golden-brown.

Cut the ripe avocado in half, remove the pit, scoop into a bowl, add lemon juice, salt, and pepper, and mash until creamy.

Spread the mashed avocado generously over one side of each slice of toast.

Slice the cucumber thinly and layer it evenly on top of the avocado spread.

Add fresh leafy greens on top of the cucumbers and thin slices of red onion.

Optionally, add halved cherry tomatoes and sprinkle fresh herbs on top.

Drizzle olive oil or your favorite spread over the ingredients.

Close the sandwich with the second slice of bread, cut in half, and serve immediately.