Sprinkle yeast on warm water, letting stand until dissolved. Add oil, salt and / of the flour, beating well. Gradually add more flour to form a soft dough.
Turn out dough on a floured board. Knead until smooth and elastic, about 10 minutes.
Place in a greased bowl, turning to coat. Cover with saran wrap and let rise in a warm place until double in size (about 1/ hours) or refrigerate overnite to rise.
Combine first 4 ingredients and simmer until thick, about 20 minutes, stirring often.
Punch down dough and turn out on a floured board. Divide dough into 2 balls, one slightly larger for the bottom. Roll larger portion out to fit a 12" round and 1" deep pizza pan with a slight overhang.
Spread bottom with mozzeralla cheese, / of the mushrooms, / of the green peppers and garlic. Sprinkle with parmesan cheese.
Roll out the other portion and cover, folding in the edges with the bottom crust, pinching to make a standing rim.
Bake in a preheated 450oF oven on the bottom rack for 7 minutes. Remove from oven, add tomato sauce, remaining mushrooms and vegetables. Sprinkle with the herbs and garlic.
Return to oven, reducing heat to 400oF and bake an additional 25 minutes until brown and set. If edges turn brown first, cover with foil. Let stand 10 minutes before serving.
Source: "The Yankee Kitchen" 04-02-93 (#2) [Stan]