1Grease a cookie sheet. Set aside. Drain pineapple, reserving the juice for frosting. Set pineapple and juice aside. In a large mixing bowl beat the butter (or margarine) with an electric mixer on medium to high speed about 30 seconds or until softened. Add about half of the flour to the butter. Then add brown sugar, eggs, baking powder, vanilla, and baking soda. Beat until thoroughly combined. Beat or stir in the remaining flour. Then stir in the drained pineapple and pecans. Drop dough from a rounded teaspoon 2 apart on the prepared cookie sheet. Bake in a 375F oven for 8 to 10 minutes or until edges are lightly browned. Remove cookies from the cookie sheet and cool on a wire rack. Frost cookies with Pineapple Cream Cheese Frosting. Store in refrigerator.