Preheat oven to 375 degrees F.
Mix ingredients into a large bowl - egg, ground turkey, onion, crackers, cooked lentils, oregano, sage and thyme. Add salt and pepper as desired.
In a separate, small bowl, whisk together brown sugar and ketchup.
Spray oil onto muffin pan.
Press meat into each muffin cup. You should be able to fill 12 cups.
Add a dollop of the brown sugar/ketchup topping to each cup of meat.
Bake until cooked through, about 35 minutes or so. The mini meatloaf will be done when a thermometer inserted into its thickest part reads 160 degrees F.