Recipe courtesy Tyler Florence
Preheat oven to 400 degrees F.
Make pesto by combining ingredients in a food processor and processing until you have a smooth puree. Add enough olive oil until you get a spreadable consistency. Season with salt and pepper.
Drizzle the slices of bread with olive oil then top each with a smear of arugula pesto. Follow that with a layer of sliced tomato and then a piece of brie. Bake in the oven until cheese has melted and the bread is nicely toasted, about 7 minutes.
Edited: October 9th, 2009