Add 1/2 teaspoon active dry yeast, 1/2 teaspoon pure maple syrup or sugar, and 1 cup warm water to a large mixing bowl. Mix to dissolve, then let rest for 10 minutes. If the mixture bubbles and foams, your yeast is fresh and activated. If it doesn’t, you’ll need to use a fresh package.
Add 1 1/4 cups vital wheat gluten, 1/4 cup whole wheat flour, and 1/2 teaspoon salt to a second mixing bowl, then mix well.
Transfer the dry ingredients to the large mixing bowl with the wet ingredients.
Use your hands to combine the ingredients into a firm stretchy dough. Don’t knead it, just combine to form a dough and leave it in the bowl.
Cover the bowl with a damp kitchen towel, plastic wrap, or lid, then let the dough rise for 1 hour.
When the dough has finished rising, preheat the oven to 350 degrees Fahrenheit.
Transfer the dough to a 9x13-inch baking dish lined with parchment paper and use your hands to flatten the dough as much as possible. You can coat your hands with a small amount of olive oil to make this easy, since the dough will be sticky.
Drizzle 2 tablespoons extra virgin olive oil on top of the dough, then use your hands to spread it evenly on the surface.
Use your fingers to press lots of deep dimples into the dough.
Sprinkle 1 teaspoon dried or fresh rosemary and 1/8 teaspoon sea salt evenly on top.
Bake, uncovered, for 35 minutes or until the top is a deep golden brown.
Let cool to room temperature before removing from the pan and serving. It will deflate slightly as it cools, and the texture is best once fully cooled.