1. Preheat oven to 375°F.
2. While the oven heats, combine 2 pkg. of sweetener, cinnamon, nutmeg, and steel-cut oats in a large bowl.
3. Then, melt the margarine and mix it into the rolled oat mixture until crumbly.
4. Once the mixture is nice and crumbly, press it into a 9" baking pan.
5. Once the mixture is in the pan, spread the crushed pineapples over it, while pouring the lemon juice and sprinkling the remaining 2 pkg. of sweetener over the pineapple to top it off.
6. Once the dish is ready, put it in the preheated oven for 30 - 40 minutes, or until it's golden brown.
7. Once the pineapple dish is all crisp, remove it from the oven, add a scoop of ice cream, and enjoy!