Decide whether you are making the classic or whole wheat version; collect ingredients.
Warm water in the microwave or over the stovetop to about 90 degrees Fahrenheit.
In a large bowl, add the warm water and sugar. Stir until sugar is dissolved. Sprinkle yeast over water and gently stir together. Let sit for 10-20 minutes or until the yeast “blooms” and forms a puffy layer on the surface (if you do not see bubbles, your water may have been too hot or your yeast is no longer active).
Add salt and olive oil, and flaxseed then stir together. Add flour(s), one cup at a time, until the dough comes together into a ball.
Knead dough until smooth (about 8-10 minutes).
Cover the bowl with a towel or plastic wrap and set in a warm place to proof for 1-2 hours, or until doubled in size.
Prepare a baking sheet with olive oil and parchment paper (if desired). Preheat the oven to 475 degrees Fahrenheit.
Once dough has proofed, stretch the dough using the back of your hands/knuckles to your desired shape and size. Transfer to baking sheet.
Top the dough with sauce and toppings of your choice then bake on the center rack for 10-15 minutes or until the crust starts to brown and the cheese is melted and bubbly. Slice and serve warm!