Pineapple Brownies
["1 1/2 c. flour", "1 1/2 c. sugar", "1 tsp. baking powder", "1/2 tsp. salt", "1/2 tsp. cinnamon", "3/4 c. butter, softened", "3 eggs", "1 tsp. vanilla extract", "1 c. well-drained crushed pineapple", "2 (1 oz.) envelopes pre-melted unsweetened chocolate"]
["In large mixer bowl, combine all ingredients, except pineapple, chocolate and walnuts (optional).", "Blend well with mixer."]
["flour", "sugar", "baking powder", "salt", "cinnamon", "butter", "eggs", "vanilla extract", "well", "chocolate"]