Preheat oven to 350°. In a large bowl, cream butter and sugar until light and fluffy. Add eggs, one at a time, beating well after each addition. Stir in pineapple and lemon juice. Gently fold in bread cubes. , Spoon into a greased 2-qt. baking dish. Bake, uncovered, 40 to 45 minutes or until top is lightly golden. Serve warm.