Preheat an oven to 375 degrees.
Place blueberries into a baking dish, and lightly sprinkle with salt. Place into oven and roast for about 10 minutes.
Arrange bread slices on a baking sheet, and spray the tops with oil. Place into oven and toast for 5-7 minutes, while the blueberries are roasting. Remove from oven.
Layer cheese spread, blueberries, and honey on each crostini and serve immediately. Alternatively, you can set up a serving station and allow guests to put their own crostini together.