3/4 c  Olive oil
1 md Onion, cut in slices as thin
-- as possible
2/3 lb Butternut squash, peeled &
-- diced
1    Red bell pepper, roasted &
-- cut into strips
4 oz Tomatoes, peeled, seeded &
-- diced
1 1/2 ts Dried yeast
1 1/2 c  Warm water
13/16 c  Durum flour biga
7 c  Durum flour
1 tb Salt
Red pepper flakes, optional

About 1 hour before you are ready to make the bread, warm 1/4 c olive oil
in a skillet & saute the onions over medium-low heat until they are soft
but still slightly crunchy. Add the squash & pepper. Cover & cook for 20
minutes. Add the tomatoes & cook another 3 to 5 minutes. Cool. Stir the
yeast into the water & let proof for 10 minutes. Add the biga & mix well.
Add the rest of the olive oil. Stir in the cooked vegetables. Add the flour
& salt slowly, mixing until the dough comes together. Knead with wet hands
until the dough is form, velvet & elastic. Place dough in an oiled bowl,
cover & let rise until doubled, about 3 hours. Divide the dough into 4
pieces & shape into long cylinders. Place on floured baking sheets, cover &
let rise until well doubled, about an hour. Preheat the oven to 400F. Bake
for 35 to 45 minutes, until golden.