Preheat the oven to 350 degrees. Line baking sheets with parchment paper.
Lay the bread or toast over the baking sheet. Spread a small amount of jam or Nutella on each slice, as desired.
In a small mixing bowl cream together the almond flour, butter, sugar, and salt. Add the egg, extract, and lemon zest and mix well. Stir in the cake flour until smooth and spreadable. Spread this mixture over the toast, covering well from edge to edge. Sprinkle almonds generously over the top.
Bake for 15 to 20 minutes until the almond cream is set and golden. Remove from oven and cool on a rack.
Sift powdered sugar over the cooled toasts and serve.
Nutrition facts are for using jam and not Nutella.