Sometimes if you're preparing multiple things in your oven, it's hard to coordinate baking times and temperatures! Luckily this asparagus will turn out great at most common baking temperatures. Here's a guide to cooking times: Baked Asparagus at 350: cook for 25 - 30 minutes. Baked Asparagus at 400 degrees: cook for 15 - 20 minutes. Baked Asparagus at 425 degrees: cook for 10 - 15 minutes Baked Asparagus at 450 degrees: cook for 8 - 10 minutes