Beat together in a mixer the butter and sugar until creamy.
Add the eggs one at a time.
Blend in the pineapple and the cubed bread.
Pour mixture into a buttered 1 1/2 qt. casserole dish or an 11x7x2 baking dish and bake at 350° for 1 hour.
Alternatively, butter the inside of a 2 qt. crock pot, pour in mixture, and cook on high for 2 hours, then low for 1 hour.
Chef's notes: Use a good bread, the better the bread the better the flavor. This can be baked in the oven or cooked in a crock pot.