Another recipe we tried from Everyday Food. I decided this is my favorite pesto recipe.

Pesto chicken burgers

1 cup fresh basil leaves
1 cup baby spinach
1 clove garlic peeled
1/4 cups walnuts
4 Tablespoons olive oil plus more for grilling
coarse salt and pepper
1 pound ground white meat chicken
2 large tomatoes cut into 1/2 inch slices
3 ounces fresh mozzarella
4 pieces focaccia, bread, halved

In a food processor, puree basil, spinach, garlic, walnuts, oil and 1 Tablespoons water, Season pesto with salt and pepper.

Heat a grill or grill pan to medium high. Combine 1 Tablespoon pesto, 3/4 teaspoon salt, 1/4 teaspoon pepper, and chicken and form into 4 patties. Clean and oil hot grill. Brush tomatoes with oil and season with salt and pepper, Grill patties, covered 4 minutes. Flip patties, Add tomatoes to grill and cook, flipping once, until tomatoes are lightly charred and burgers are opaque throughout, about 4 minutes.

Assemble sanwiches in focaccia with pesto, burgers and tomatoes.
We once tried this on our own idea with ground turkey and it was just as good as chicken.