Macaroni And Brie With Crab

Ingredients

• nonstick cooking spray
• 1 pound medium shell pasta
• 5 tablespoons butter
• 1 medium sweet onion (such as vidalia or maui), halved and thinly sliced
• 1/3 cup all-purpose flour
• 3/4 teaspoon salt
• 1/2 teaspoon ground black pepper
• 3 cups condensed milk
• 1 pound brie cheese, trimmed, cut into small wedges, and chopped (reserve 8 small wedges for topping)
• 12 ounces fresh cooked crabmeat or canned lump crabmeat, drained, flaked, and cartilage removed
• 3 slices stale or toasted white bread, torn apart into pieces