Slice the cucumber into rounds, about ⅛” thick. You can use a piece as a top and a bottom or just as a base. If using a slice for a top, cut out the middle from those pieces so it will sit on top of the tomato without falling off. Season the cucumber slices with a sprinkle of salt and pepper. Squeeze the lemon juice onto the slices.
Next, spread the goat’s cheese on the bottom cucumber slice. If you aren’t using the cheese, add sliced avocado instead.
Then, slice thin pieces of onion and add a couple on top of the avocado (or cheese). Raw onion is usually overpowering for me, so I added just a little to give a bit more flavor.
Next, slice the tomatoes in half and add it to the stack.
Top with another piece of cucumber (or not…after all, it’s your show!). Alternatively, stick a toothpick into the stack and top with an olive.