Step 1

Turn the broiler on low. Put bread slices on a baking sheet in a single layer. Place under the broiler for 3-5 minutes or until lightly browned.  Turn slices over and put them back under the broiler to lightly brown the other side.

Step 2

Heat olive oil in a skillet over medium heat. Add shrimp, onion, and celery. Cook for 1 minute, stirring frequently.  Add the garlic and sprinkle the skillet with the Cajun seasoning and black pepper. Cook for 1 minute, stirring constantly.  Reduce heat to very low.  Add cream cheese, Parmesan, and Fontina. Stir until the cheese is blended and almost fully melted. Season with kosher salt and fresh ground black pepper

Step 3

Top the toasted baguette crusts evenly with the shrimp mixture.  Sprinkle with crushed red pepper and place in a 400-degree oven for 10 minutes or until lightly browned and bubbly.  Sprinkle with green onions. Serve immediately.