Preheat oven to 350°. Line a rimmed baking sheet with parchment paper.
Arrange mushrooms in a single layer on prepared baking sheet. Drizzle with olive oil, and sprinkle with ⅛ teaspoon salt.
Roast mushrooms until they release juices, approximately 20 minutes. Let cool, and chop finely.
Spray 18 wells of 2 (12-well) mini cheesecake pans with removable bottoms with cooking spray.
In the work bowl of a food processor, pulse crackers until fine.
In a small bowl, stir together cracker crumbs and melted butter. Press approximately 2 teaspoons crumb mixture into bottom of each prepared well of pans.
Bake crust for 6 minutes.
In a medium mixing bowl, beat cream cheese at medium speed with a mixer until light and creamy. Beat in flour, whipping cream, Worcestershire sauce, remaining ½ teaspoon salt, and pepper. Beat in eggs. Stir in mushrooms, cheese, bell pepper, chives, parsley, and thyme. Divide mixture among prepared wells of pans.
Bake until cheesecakes are slightly puffed, approximately 12 minutes. Let cool for 1 hour on a wire rack. Run a knife around edges of cheesecakes before removing from pans.
Garnish with chopped herbs, if desired.
Serve warm.
Notes
*We used Ritz Crackers.
Recipe by TeaTime Magazine at https://teatimemagazine.com/mini-savory-mushroom-herb-cheesecakes/