Preheat oven to 425°F. Place a cast iron skillet in the oven to preheat.
In a large mixing bowl, whisk together lupin flour, arrowroot powder, flaxseed, garlic powder, and salt.
In a separate bowl, whisk almond milk, eggs, and olive oil. Gradually combine the wet ingredients with the dry until smooth.
Remove skillet from the oven. Add olive oil, then pour the batter in, spreading to about ½-inch thick.
Bake for 20 minutes until golden brown. Add your favorite toppings and return to the oven for another 5–7 minutes to melt the cheese or warm toppings. Enjoy!
