Soak the crab in milk for at least 30 minutes to remove any fishy taste or odor. If you are using canned crab, drain the liquid first and sift through the crab to remove any bits of shells.
Drain and rinse the crab in a fine mesh colander after soaking.
Press the crab with a spatula to squeeze out as much moisture as possible.
In another medium bowl, mix the egg, Creole mustard, Worcestershire, lemon juice, crab boil, hot sauce, seafood seasoning and Cajun seasoning.
In a food processor, process the red bell pepper and green onion.
Add to the seasoning mixture and stir.
Fold in the crab, salt, pepper and 3/4 cups of the Keto breadcrumbs. Add more breadcrumbs if the mixture seems to be too wet, but this should not occur if you have squeezed the moisture out of the crab.
Place the remaining breadcrumbs in a shallow dish, such as a pie plate.
Form patties with the crab mixture, then coat with breadcrumbs.
Place the crab patties on a baking sheet.
Heat some oil in a skillet on medium heat. Fry the patties for about 3-5 minutes on each side. Watch them carefully to make sure they do not burn. They should be golden brown.
Remove to a paper towel-lined plate and keep warm until all patties are fried.