Dice the onion, peel the shrimp (reserving the shells), and refrigerate the shrimp until needed.
Make shrimp stock by sautéing shrimp shells with bay leaves in olive oil for 3-4 minutes; add chicken broth and simmer on low.
Boil live crabs for 3-5 minutes, then cool and clean them, reserving large claws and cleaned crab pieces.
Blend one can of tomatoes and set it aside with the strained shrimp stock.
In a large pot, prepare a dark roux with Bisquick and oil, stirring until it reaches a chocolate color; add diced onion once it darkens.
Pour in the seafood broth, blended tomatoes, sliced okra, crabs, and hand-squeezed tomatoes. Season and simmer for 20-30 minutes.
Add shrimp and lump crab meat in the last 5-10 minutes, cooking until the shrimp turn pink. Serve warm with rice and garnish with fresh parsley.