PaintMeJudy ... No, it should not be like a pudding, but like an angel cake all the way through.
By chance? did you add water? It should only be the box of one-step angel cake mix and a 19 oz. can of crushed pineapple.
Generally, you use the baking time on the box, for the same size/shape of pan.
Because of the pineapple it can be very moist ..... and so, I always find it takes a little longer than the angel cake to be sure it is baked right through.
The pineapple cake is good .... but really good is any pie filling in place of the pineapple.
Cherry is probably my most favourite ... nice and pink and big cherries throughout.
Quite showy and tasty.
No wait ... apple cinnamon would be my MOST fav
... apple pie filling and extra cinnamon mixed in.
I run a knife through the filling a few times, so the apples get chopped up a bit.