5 Roma tomatoes, roasted (see instructions below)

10 fresh basil leaves

1/2 cup chopped green onion, green & white parts

1 cup grated mozzarella cheese

1 cup grated sharp cheddar cheese

1 cup mayonnaise

kosher salt & pepper

1 baguette, sliced about 1/4- to 1/2-inch thick

olive oil (for drizzling on the baguette slices)

 

To roast the tomatoes: Preheat oven to 400 degrees F. Line a baking sheet with parchment paper. Cut the tomatoes in half lengthwise and arrange on the baking sheet cut side up. Drizzle with olive oil and sprinkle lightly with kosher salt and pepper. Roast for about 40 minutes to 1 hour, or until the tomatoes are somewhat caramelized. Remove from oven and allow to cool. These can be made a day ahead of time and stored in the refrigerator. To prepare the baguette slices: Preheat oven to 400 degrees F. Drizzle a large baking sheet with olive oil. Lay the baguette slices flat on the baking sheet in a single layer. Drizzle the tops of the slices with olive oil and use a small brush to evenly distribute the oil on top of the baguette slices. Bake in the preheated oven for 10 to 12 minutes until they are toasted to your liking. The longer they bake, the crunchier they become. Keep in mind that you will bake them again when making the appetizers. For the cheese mixture and assembly of the crostini: Combine the green onions, cheeses and mayonnaise and mix well. Set aside. Stack all of the basil leaves on top of each other and roll them up. Slice the rolled leaves in thin slices and separate the slices. This technique is called chiffonade. Set the basil chiffonade aside. Cut each of the roasted tomato halves in half which should give you 20 pieces of roasted tomato. Preheat oven to 400 degrees F. To assemble the crostini, spread each of the baguette slices with some of the cheese mixture. Sprinkle the basil chiffonade on top of the cheese mixture. Top with a piece of roasted tomato. Bake in the preheated oven until the cheese mixture is hot and bubbly, about 8 to 10 minutes. Remove from the oven and serve.