Taco Pizza with Cornmeal Crust

Name: Taco Pizza with Cornmeal Crust
Cuisine: American, Mexican, Latin American
Ingredients: taco; pizza; cornmeal; crust; beef; ground; italian; mexican; main_dishes; 1 cup warm water; 1 packet (2 1/4 tsp) active dry yeast; 2 1/2 cups all-purpose flour; 1/2 cup yellow cornmeal; 1/2 tsp salt; 2 TBSP plus 1 tsp olive oil; 1 pound ground beef; 1/2 yellow onion, diced; 4 garlic cloves, minced; 2 TBSP; chili powder; 1 tsp ground cumin; 1/2 tsp salt; 1 cup water; 8 ounces sharp cheddar cheese, shredded; 2 cups shredded iceberg lettuce; 2 Roma tomatoes, diced; sour cream, hot sauce