Directions

1. Process spinach in a food processor until finely chopped.
2. Combine turkey, spinach, 1/4 cup pesto sauce, and olive oil in a large bowl.  Gently mix until incorporated.
3. Form mixture into 10 patties.  Season patties with salt and pepper.
4. Grill turkey until no longer pink inside.  Add pineapple slices to grill the last 5 to 10 minutes and cook until golden brown.
5. Toast buns on grill.
6. Place lettuce on bottom half of each bun.
7. Place burger on bun.  Top with cheese, remaining 1/4 cup pesto sauce, and grilled pineapple slice.  Place on bun top.