I agree with the pesto recommendations - but check labels if it's store bought as the traditional recipe includes parmesan.
Garlic, evoo, pinch of red chili flake
Taco pizza! Mix a can of refried beans with 1 c salsa, spread over pizza like sauce. Add taco cheese and toppings. Yum! This is a halfhearted imitation of the recipe from budgetbytes, and it is really freakin good.
Romesco sauce - roasted red peppers and almonds, evoo in a food processor or blender (probably want to google that one as I think Im forgetting something).