Slice baguette into thick rounds and toast lightly in olive oil until golden and crisp at the edges.
In a skillet, melt butter and add minced garlic. Sauté shrimp with salt, pepper, and red pepper flakes until tender.
In a bowl, combine cooked shrimp, crab meat, mozzarella, Parmesan, and parsley.
Place toasted slices on a baking sheet and top with the seafood-cheese mixture generously.
Broil for 3–5 minutes until the cheese bubbles and turns lightly golden. Garnish with parsley and serve warm.
