Drain pineapple chunks and reserve 1/4 cup of liquid. Add cornstarch to reserved 1/4 cup of juice and stir to dissolve.
In a bowl, mix together pineapples, sugar, eggs and vanilla. Add in cornstarch/juice mixture.
Pour into a 9 x 9 inch baking dish. Dot with butter and sprinkle with cinnamon.
Bake at 350 degrees F. for 60 minutes. Serve warm
Video
Notes
You can use two cans of crushed pineapple but I prefer the texture of a can of crushed and a can of chunks. You could substitute pineapple tidbits for pineapple chunks also.Make this 1-2 days ahead of time and keep stored, covered in the refrigerator and bake before serving.