Slice cucumbers lengthwise into 4 sticks each, so that you have 16 sticks total.
On a flat work surface, place 1 piece of salmon horizontally.
In a small bowl, mix together cream cheese, capers and lemon juice.
Spoon 1 tablespoon cream cheese mixture onto 1 end of salmon slice. Place 1 cucumber stick on top of the cream cheese lengthwise, using the cheese to secure it.
Roll the salmon around the cucumber and cream cheese like a jelly roll. Salmon should create a wide belt around the middle of the cucumber stick.
Repeat previous two steps with remaining ingredients.
Arrange sliced onions around the edge of a platter with rolls in the center; scatter grape tomatoes over and around rolls as a garnish and add a few lemon wedges for squeezing over salmon. Serve matzah or flat breads in a basket if desired.
Contributed by: Quick & Kosher, JAMIE GELLER
Nutrition information does not include garnish or optional ingredients.