In a small saucepan heat the butter over medium-low heat. Add the garlic and onion, cook until softened, stirring often about 5 minutes.
In a blender puree the balsamic vinegar and strawberries together until smooth.
Add the mixture to the pan with the broth, honey and thyme.
Turn the heat up and bring to a boil, reduce to a slow simmer and cook, stirring often about 15 minutes until the mixture is almost reduced by half and thick. It should coat the back of a spoon without running off.
Season with a couple pinches salt and pepper.
To serve spoon the sauce generously over the chicken and garnish with fresh parsley or basil and fresh strawberries, if desired.