Heat oven to 400° F.

Toss grapes with olive oil and balsamic vinegar to coat, then place them on a baking tray in the oven for 10 – 15 minutes, or until they just begin to soften. Remove from oven and let rest in pan for 5 minutes.

Slice block of feta into two thick slices and place in baking dish. Sprinkle herbs and red pepper flakes directly onto the cheese, and drizzle with olive oil. Top with roasted grapes. Bake about 10 minutes or until the cheese has softened. Serve with crusty slices of bread.