Anchovy Crostini

Ingredients

• 12 slices white bread (or 24 slices of a baguette)
• 1 ounce virgin olive oil
• 1 1/2 ounces butter
• 2 tablespoons all-purpose flour
• 1 cup milk
• 3 tablespoons grated parmesan cheese
• 3 ounces mushrooms, finely diced
• 2 teaspoons anchovy paste
• 2 tablespoons grated parmesan cheese
• 1 (50 g) can rolled anchovy fillets
• 6 stuffed olives
• 1/4 red pepper
• salt and pepper