Preheat oven to 375°, and grease a standard muffin tin with cooking spray.
Chop shallot, greens, parsley and thyme in a food processor. Stir together with remaining ingredients in a medium bowl. Divide evenly into prepared pan, filling each cup about two-thirds full.
Bake for 20–22 minutes. Remove from oven, let cool for 2 minutes in pan, and run a paring knife around edges to loosen. Serve warm.