Sardine Cucumber Sandwiches (Sardine Sandwiches) with thinly sliced cucumber are a perennial Malaysian party favorite. It is a well loved budget friendly treat.
Transfer sardines from can with about a tablespoon of the tomato sauce. Discard the rest of the sauce. Remove bones from sardines. Add lime juice, chopped red chilies, salt, and pepper. Mash and mix everything up with a fork.
Butter the 8 slices of bread. Spread an even layer of mashed sardines on 4 slices of bread.
Place about 6 slices of cucumber on top of the sardines and sandwich with the remaining 4 slices of buttered bread.
Slice off the crust on all sides with a very sharp knife. Cut the sandwich into half to form rectangles or triangles. Serve immediately.