Cast Iron Baked Oysters Rockefeller with Creamy Dijon Spinach

12733564_10208598768986084_2655714940498986095_n They say, oysters are an aphrodisiac. I say, they’re just damn good. Cover your bases. Serve oysters on Valentine’s Day. Cast Iron Baked Oysters Rockefeller with Creamy DijonSpinach 4 slices thick-cut chopped bacon3 cups chopped onions1 1/2 cups chopped green bell pepper1 1/2 cups chopped celery1 teaspoon Creole seasoningKosher salt and fresh-ground pepper, to taste1-pint oysters, drained and patted dry1 recipe Dijon Creamed Spinach, recipe follows1/3 cup bread crumbs1/3 cup finely grated Parmesan Dijon Creamed Spinach:1/2 cup julienned yellow onion1 tablespoon olive oil2 teaspoons all-purpose flour1 tablespoon minced garlic1 sprig fresh thyme1 bay leaf1/4 cup Dijon mustard2 cups heavy creamKosher salt and fresh-ground pepper, to taste2 pounds spinach, cooked, squeezed dry and coarsely chopped In a large skillet, render the chopped bacon until crispy, about 4 minutes. Add the onions, bell pepper and celery and cook until very tender and all the juices are evaporated, 8 to 10 minutes. Season with the Creole seasoning, salt, and pepper and set aside to cool.Preheat the oven to 375.Once the vegetables have cooled to room temperature, divide the bacon-vegetable mixture evenly between 6 individual shallow ramekins, about 1/3 cup for each ramekin. Divide the oysters evenly among the ramekins, laying the oysters the top of the vegetables in 1 even layer. Spoon 1/3 cup of the Dijon Creamed Spinach over the oysters in each ramekin, spreading with the back of a spoon to form an even layer. Top with the bread crumbs and Parmesan and bake until bubbly and golden brown on top, 20 to 25 minutes. Dijon Creamed Spinach:In a large skillet, cook the onions with the olive oil until almost translucent. Sprinkle the onions with the flour and add garlic, thyme, and bay leaf, and cook for 2 minutes. Add mustard and cook 2 to 3 minutes, stirring constantly. Add the heavy cream and whisk to combine. Bring to a boil, reduce heat to low and cook until sauce is thick and creamy, about 15 minutes. Season with salt and white pepper, to taste. Add the spinach, stir until thoroughly combined, and serve.