Easy Taco Pizza

Description
Contributed by Jenn b aka Mom2sam and Tiny at World Recipes Y-Group
 * Source: Better Homes and Gardens
 * Makes 6 Servings
 * Start to Finish: 40 minutes

Ingredients

 * 2 to 2½ cups all-Purpose Flour
 * 1 package active Dry Yeast
 * ¼ teaspoon salt
 * 1 cup warm water (120°F to 130°F)
 * 2 tablespoons cooking oil
 * ¾ cup cornmeal
 * ¾ pound ground beef
 * 1 cup chopped onion
 * 1 8-ounce can tomato sauce
 * 1 x 2¼-ounce can sliced pitted ripe olives, drained
 * 1 x 1¼-ounce envelope taco seasoning mix
 * 2 cups shredded Cheddar cheese (8 ounces)
 * 2 cups shredded lettuce
 * 2 cups chopped tomatoes
 * 2 Medium avocados, seeded, peeled, and chopped
 * 1 x 8-ounce carton dairy sour cream
 * chili powder (optional)

Directions

 * 1) In a large bowl combine 1¼ cups of the flour, the yeast, and salt.
 * 2) Add warm water and 2 tablespoons oil.
 * 3) Beat with an electric mixer on low speed For 30 Seconds, scraping bowl constantly.
 * 4) Beat on high speed for 3 minutes.
 * 5) Using a spoon, stir in cornmeal and as much of the remaining flour as you can.
 * 6) Turn dough out onto a lightly floured surface.
 * 7) Knead in enough remaining flour to make a moderately stiff dough that is smooth and elastic (6 to 8 minutes total).
 * 8) Divide dough in half. Cover and let rest 10 minutes.
 * 9) Grease two 11- to 13-inch pizza pans or baking sheets.
 * 10) On a lightly floured surface, roll each half of dough into a circle 1 inch larger than pizza pan.
 * 11) Transfer dough to pans.
 * 12) Build up edges slightly. Flute edges, if desired.
 * 13) Prick generously with a fork. Do not let rise.
 * 14) Bake in a 425°F oven for 10 to 12 minutes or until lightly browned.
 * 15) Meanwhile, in a large skillet cook ground beef and onion until meat is brown and onion is tender. Drain fat.
 * 16) Stir in tomato sauce, olives, and taco seasoning mix; Heat through.
 * 17) Spread ground beef mixture over hot crusts.
 * 18) Sprinkle with cheese.
 * 19) Bake about 12 minutes or until cheese melts.
 * 20) Top with lettuce, tomatoes, and avocados.
 * 21) Spoon sour cream into center of each pizza.
 * 22) Sprinkle sour cream with chili Powder, if desired.