Preheat oven to 375F. Place washed seedless red grapes in a medium baking pan and spray with olive oil. Roast for 15 minutes, or until the grapes start to burst and release juices.
Blue Cheese Spread:
In a small food processor, combine 1 cup crumbled blue cheese, 1/2 cup sour cream, a pinch of freshly grated nutmeg, and the leaves from 2 thyme sprigs. Pulse to combine, then process until a desired consistency (you can leave it a bit chunky if you like!). Add a tablespoon of olive oil if you would like a richer flavor.
Assemble the Crostini:
Add a smear of the blue cheese spread to crackers or Melba toast. Top with several roasted grapes. Drizzle with honey, fig balsamic glaze, or a truffle balsamic glaze. Serve immediately.
You can also use a baguette: slice it thinly, brush with olive oil, and toast in a preheated over (375F) for 5-10 minutes until desired crispiness.
The nutritional information is estimated for just the blue cheese spread and roasted grapes, if this was shared between eight people. Any crackers, baguette, honey, or balsamic glaze drizzles will add extra calories.