Step 1

Preheat oven to 375 degrees F. Spray a shallow baking dish with cooking spray, then set aside.

Step 2

Using a stand mixer (or a hand mixer + large bowl), beat mayonnaise, cream cheese, Worcestershire sauce, hot sauce, ground mustard, salt, and pepper on medium-high speed until mostly smooth, about 3-5 minutes.

Step 3

Remove bowl from mixer and add cheddar cheese, pepper jack cheese, pimentos, and green onion to bowl. Use a spatula to gently fold all the ingredients together until thoroughly mixed.

Step 4

Pour cheese mixture into prepared baking dish and gently smooth out the top so that it's flat.

Step 5

Bake dip for 15-20 minutes or until the cheese is melted and bubbly.

Step 6

Serve dip immediately with crackers or veggies for dipping.