smaller squares—they look like part of the same tray but are a bit simpler.
If you need to make these ahead for a busy party day, assemble and cut the sandwiches, then layer them in an airtight container between sheets of wax paper and refrigerate for up to 8 hours. For a slightly sturdier bite, choose a denser, bakery-style white bread instead of ultra-soft sandwich bread.
You can also peel the cucumbers if your family doesn’t like the texture of the skin,