Preheat the oven 500 degrees.
Toss fennel with 1 tablespoon olive oil, anchovies and 1 tablespoon of fennel seed. Roast on the top shelf for 8 to 10 minutes or until tender and softened.
Toss the cubed bread with 1/2 tablespoon olive oil, salt and pepper, to taste. Remove baking dish from the oven. Set halibut on top of roasted fennel, top with croutons, drizzle with a little olive oil and bake for 8 to 12 minutes on the top shelf of the oven. Sprinkle with fennel seeds, dill and serve.