Clams Casino is a classic New England appetizer made with tender littleneck clams baked on the half shell with a savory topping of fresh breadcrumbs, sweet peppers, and smoky bacon.
Position a rack in the center of the oven and preheat the broiler for 5 minutes.
Scrub the clams under cold water with a soft brush, then arrange them in a single layer on a foil-lined baking sheet.
Broil the clams just until they open, 4 to 6 minutes. Use tongs to remove each clam as it opens to prevent overcooking. Discard any clams that stay closed. Turn off the broiler and set the oven to 400°F.
When the clams are cool enough to handle, remove and discard the top shells. Pour any juices from the baking sheet into a small bowl and set aside. Run a paring knife under each clam to detach it from the bottom shell, then return the clams to the baking sheet.
Cook the bacon in a skillet over medium heat until browned but not fully crisp. Transfer to paper towels to drain, leaving about 1 tablespoon of bacon fat in the pan.
Add the shallot and diced bell pepper to the skillet and sauté for 3 to 4 minutes, until softened.
Pour in the white wine and scrape up any browned bits. Stir in the reserved clam juice, then mix in the breadcrumbs and parsley. The mixture should be moist but not wet. Remove from the heat.
Spoon the breadcrumb mixture evenly over the clams and top each with a piece of bacon. Bake for 3 to 5 minutes, or just until the topping is heated through and lightly crisped.
Notes
CLAM TYPES: Littleneck and middleneck clams both work well in this recipe. Littlenecks (1-3/4 to 2") are more tender; middlenecks (2 to 2-1/2") are slightly firmer and meatier.CLEANING CLAMS: Hard-shell clams like littlenecks rarely require soaking, but always scrub them well under cold water to remove grit. Discard any cracked shells or clams that won’t close when tapped.