Thinly slice a baguette; arrange in a single layer on a baking sheet. Brush with softened butter and sprinkle with salt and sugar. Bake at 425 degrees F until lightly golden, about 7 minutes. Let cool slightly.
Simmer 1/4 cup water, some thin strips of lemon zest, 1/2 teaspoon anise seeds and 2 tablespoons sugar in a saucepan until syrupy. Spread lemon curd on the toast rounds. Top with the candied zest and anise seeds.