Nonstick spray
1 stick plus 2 tablespoons unsalted butter
1 tablespoon olive oil
3 tablespoons finely chopped red onion (about 1/4 small red onion), soaked in cold water 5 minutes
1 jalapeno, seeded and finely chopped
1 clove garlic, minced
Salt and freshly ground black pepper
2 tablespoons heavy cream
2 tablespoons seafood seasoning, divided (recommended: Old Bay)
2 cups panko breadcrumbs, divided
1 egg, lightly beaten , divided
4 tablespoons chopped fresh cilantro, divided
2 limes, zested, divided
3 limes, juiced, divided
1 pint jumbo lump crabmeat, picked over for cartilage (about 2 cups)
1 pound U-12 or colossal shrimp, peeled, deveined and tails on (about 12 shrimp)