In a large bowl, mix the egg, diced peppers and onion, hot sauce, Old Bay seasoning, salt, mayonnaise, lime juice, and lime zest. Stir until everything is incorporated.
Gently fold in the cooked amaranth and crab meat until combined.
Sprinkle whole wheat flour and blend in to form a cohesive dough.
Preheat a saute pan with a splash of olive oil and preheat your oven to 400F.
Scoop the crab cake mixture onto the hot saute pan and cook on both sides, gently flipping after the first side is golden brown.