Peanut Butter Chocolate Chip Cookies (Red-haired Megan)

1 cup PB
3/4 cup butter
3/4 cup sugar
1 1/2 cups brown sugar
1 egg
1/4 tsp. vanilla
1/4 tsp. salt
1 1/2 tsp. baking powder
1 1/2 cups flour
1/4 cup water
2 cups oats
1 cup chocolate chips

Bake 350* for 12-15 minutes.