Shrimp Casserole A Creamy Dreamy Seafood Delight

Ingredients

• 1.5 lbs (680g) large shrimp, peeled and deveined
• 1 tablespoon (15ml) olive oil
• 1 medium onion, chopped (about 1 cup, 150g)
• 2 cloves garlic, minced
• 4 tablespoons (57g) unsalted butter
• 4 tablespoons (30g) all-purpose flour
• 2 cups (473ml) whole milk
• ½ cup (118ml) heavy cream
• ½ teaspoon salt
• ¼ teaspoon black pepper
• ¼ teaspoon paprika
• 2 tablespoons chopped fresh parsley
• 1 tablespoon fresh lemon juice
• 1 cup (120g) panko breadcrumbs
• 4 tablespoons (57g) unsalted butter, melted
• ¼ cup (28g) grated Parmesan cheese