Preheat oven to 400 degrees and line a baking sheet with parchment.
Toss the pears with 1 tablespoon of olive oil, honey, bourbon (if using), cayenne pepper, cinnamon, and a pinch of salt and pepper. Spread onto the baking sheet and roast for 20 minutes until softened and golden, turning the pears over halfway through baking time. Remove from the oven. Switch the broiler to high.
Slice a baguette into eight crostini (or more, if you want smaller toasts). Brush the flat sides with olive oil and sprinkle with salt and pepper. Set on an unlined baking sheet and broil 3-4 minutes until golden brown. Watch closely.
In a food processor, whip the ricotta with a pinch of salt until smooth.
To make the apple thyme honey, combine the honey, fresh thyme, and cider vinegar in a small bowl or jar until the three are nicely incorporated.
To assemble the crostini, dollop the whipped ricotta onto the toasted bread. Add a pear quarter to each. Drizzle with the honey, leaving the rest on the side for serving, and sprinkle with blue cheese, if using.