Caramelized Onion Pizza - With meat

itemscope itemtype="http://data-vocabulary.org/RecipeIngredient"> 2 tablespoons butter 2 onions, halved and sliced 1 teaspoon sherry vinegar 1/2 teaspoon salt[...]

itemscope itemtype="http://data-vocabulary.org/RecipeIngredient"> 1 (8-ounce) ball Pizza Dough 1 tablespoon olive oil 1 1/2 cups vertically sliced onion 1[...]

itemscope itemtype="http://data-vocabulary.org/RecipeIngredient"> 1 (8-ounce) ball Pizza Dough 1 tablespoon olive oil 1 1/2 cups vertically sliced onion 1[...]

cornmeal , for pan 2 teaspoons extra virgin olive oil 2 cups onions , thinly sliced 2 cups frozen artichoke hearts , thawed and sliced 1 cup sliced red bell[...]