Preheat the oven to 390 degrees Farenheit
In a food processor combine all of the ingredients for the falafels and blend until smooth, scraping down the sides of the processor to ensure everything is blended.
Using a spoon, form the batter into 12 patties and place on a greased baking sheet.
Place the baking sheet in the oven and bake for 20 minutes, flipping the patties half way through cooking.
To make the tzatziki, use a cheese grater to grate the cucumber. Place the grated cucumber in between a few sheets of paper towel and gently squeeze to get the excess liquid out.
Place the greek yogurt, crushed garlic, grated cucumber and lemon juice in a bowl and stir until well combined.
Serve the falafels with a wedge of lemon and top with the tzatziki