Combine the flaxseed meal and 3 tablespoons (45 ml) very hot water in a small bowl until a slurry is formed; set aside.
Combine the flour and salt in a large mixing bowl of a stand mixer. Combine the yeast, olive oil, sugar, and 1/2 cup (120 ml) warm water in a medium bowl or measuring cup. Allow to rest for 3 minutes for yeast to activate.
Add the yeast mixture to the flour mixture and mix for 1 minute. Add the flax slurry to the dough and mix until the dough comes together in a ball, about 5 to 7 minutes. (If dough is too dry, add warm water a teaspoon at a time to form a tender, pliable dough.**) Set the dough aside, cover, and allow to rest for 1 hour.
To prebake the crust, preheat oven to 450 degrees F (230 C, or gas mark 8).
Roll the dough between 2 pieces of parchment paper to desired thickness. Transfer the dough to a pizza stone or baking sheet. Brush the entire dough with olive oil and sprinkle evenly with the garlic powder. Top with favorite, fresh ingredients and bake 16 minuts or until cheese is melted and crust is cooked.
**Personal note: I live in the dry desert and had to add quite a bit of water to make the dough pliable.