First, prepare the zaatar spice blend. In a bowl, mix the thyme, sumac, sesame seeds, and ½ tsp of salt. Whisk in the oil, and set aside.
To prepare the flatbread, add the almond flour, tapioca flour, and ¼ tsp salt to a bowl. Whisk to combine. Pour the coconut milk and mix until smooth.
Place a large nonstick pan over medium heat. Once hot, add ½ cup of batter to the skillet. Immediately spread it using a spoon until flat.
Cook for 2-3 minutes until mostly cooked, then flip. Drop the heat to low and cook for 3 more minutes. Take your time cooking the flatbread without burning it.
Transfer to a large plate. Repeat with the remaining batter, and place the second flatbread on another plate. Divide the za’atar blend over each flatbread and spread, leaving ½ inch (1 cm) of crust.
Cut the cherry tomatoes into quarters and the cucumber into half circles. Top the flatbreads with cucumber and cherry tomatoes. Add some fresh mint leaves and serve.