Artichoke Pizza

2 (8oz) cans Crescent Rolls
1/2 c. Hidden Valley Ranch dressing (prepared)
2 (14 oz) cans artichoke hearts, drained
1/2 c. shredded mozzarella cheese
1/4 c. grated Parmesan cheese
Pimentos

Unroll rolls without tearing. Press into 15X16X1 pan. Bake 10 minutes at 375. Combine remaining ingredients, except Parmesan cheese and spread over dough. Sprinkle Parmesan over top and bake 15 minutes. Let stand 5 minutes, then cut.