Instead of dark Karo syrup, you can sub 1/3 cup light brown sugar and 2 tablespoons dark brown sugar.
You can easily make your own Cajun seasoning. There are many different varieties. Here is one option: Combine 1 teaspoon cumin, 1 teaspoon coriander, 1 teaspoon paprika, 1/4 teaspoon salt, 1/4 teaspoon cracked pepper, and 1/4 teaspoon oregano. You can add any of the following as well: onion powder, garlic powder, basil, thyme, chili powder, crushed bay leaves, cayenne pepper. Possibilities are endless. Do what suits your taste.
Photography: Daniel Lailah