1/2 c. butter
1 tsp. cornstarch
1 tsp. grated lemon
1/4 c. lemon juice
1/3 c. pineapple juice
2 tsp. finely chopped onion
1 tsp. soy sauce
1/4 tsp. thyme

Combine and brush chicken breast as they cook. I do this on the grill and also grill the whole pineapple slices to put on top.