Preheat oven to 400°F.
Place 1 baguette, sliced on a baking sheet. You can line it with parchment paper if you hate cleaning up. I never do because the bread gets crispier without one!
Smear 1/3 to 1/2 cup mayo all over the bread slices. Sprinkle with 1/2 teaspoon garlic powder and 1/2 cup Cheddar cheese.
Cut 1 pound tomatoes to fit the bread slices, and lay them over the cheese.
Bake for 7 to 12 minutes, until the tomatoes are roasted and tender and the cheese is ooey gooey.
Season with salt and pepper and sprinkle with 3 tablespoons thinly sliced basil.
