Preheat oven to 350 degrees. 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 the pineapple and lemon juice. Gently fold in bread cubes.
Spoon into a greased 2-quart baking dish. Bake, uncovered, 40–50 minutes or until top is lightly golden. Serve warm.