World’s Best Burgers

Fajita Burger

Fresh all-beef patty on a sesame bun. Topped with grilled spicy bell peppers and onions, pepper jack cheese, and creamy mustard. Our Original Creamy Mustard is the perfect blend of mayonnaise and mustard. Served with pickle spear on the side.

Fajita Burger

$8.39
12 min
World’s Best Burgers

Fresh all-beef patty on a sesame bun. Topped with grilled spicy bell peppers and onions, pepper jack cheese, and creamy mustard. Our Original Creamy Mustard is the perfect blend of mayonnaise and mustard. Served with pickle spear on the side.

Allergen Information

Contains: dairy, gluten

spicyburgerbeefcheesegrilled

Customize Item

Choose Your Preparation

Required
Choose 1

Choose Your Sauce

Required
Choose 1

Add Cheese

Choose up to 2

Premium Add-Ons

Choose up to 5

Free Modifications

Choose up to 8

Make it a Combo

Optional

Special Requests

Let us know if you have any dietary restrictions or special preferences.

1
$8.39
Please select all required options to continue
Knowlwood Logo
Knowlwood
EST. 1957 • BLDG. 1909

Home of the World's Best® Burger & Irish Nachos.

Proudly serving Old Town Irvine from a historic 1909 blacksmith shop on Sand Canyon Avenue.

🔨 Original Tools & Cattle Brands on Display

Visit Our Historic Location

  • 14982 Sand Canyon Ave
  • Old Town Irvine, CA 92618
  • (949) 786-8626
  • Since 1957 in a 1909 Building

© 2025 Proficientea LLC. All rights reserved.