Place salmon in a dish, sprinkle with maple sugar, salt and set aside. In a bowl, combine lemon juice and zest, cheese, dill, green onion and pepper. Take one slice of bread, spread it with this mixture as well as some of the salmon. Repeat with a second slice, then add cucumber and bacon. Top with a third slice. Hold together with a toothpick and cut into four pieces. Make another 5 mini sandwiches and serve.