Top one slice of bread with Havarti cheese and toast both slices in a toaster oven.
To make the pesto sauce, finely chop basil, parsley, and Parmesan cheese using a knife. Stir in oil olive, salt and peper then the smashed avocado and lemon juice. Done!
Take the slice of toast with melted cheese and layer on cucumber, artichoke, tomato, and onion slices then top with microgreens.
Finish by spreading the avocado pesto sauce on the remaining slice of toast, then top off your sandwich. Cut into sailboats or trucks depending on your preference and enjoy! ;)