Gather all ingredients on a clean surface.
Slice mini buns in half.
Spread condiments on both sides of each bun.
Layer lettuce on the bottom half of each bun.
Add a slice of deli meat on top of the lettuce.
Place a slice of cheese over the meat.
Add sliced tomatoes and cucumbers.
Top with avocado or guacamole if desired.
Close the sandwiches with the top half of the bun.
Secure each sandwich with a toothpick for easy serving.