line it with parchment paper.
In a saucepan, combine the drained crushed pineapple and granulated sugar over medium heat. Cook for about 5 minutes, stirring occasionally.
In a small bowl, mix together the cornstarch and water until smooth. Add the cornstarch mixture to the pineapple mixture in the saucepan. Stir continuously until the mixture thickens, about 2-3 minutes. Remove from heat and stir in the vanilla extract. Set aside to cool slightly.
In a separate bowl, combine the old-fashioned oats, all-purpose flour, brown sugar, and salt. Pour in the melted butter and mix until the ingredients are well combined and crumbly.
Spread half of the oatmeal crumble mixture onto the bottom of the prepared baking dish, pressing down lightly to form the base layer.
Spread the pineapple filling evenly over the oatmeal crumble base.
Sprinkle the remaining oatmeal crumble mixture over the pineapple filling, covering it completely.
Bake in the preheated oven for 25-30 minutes, or until the top is golden brown and the filling is bubbling around the edges.
Remove from the oven and allow it to cool slightly before cutting into squares or bars.
Serve the Pineapple Crunches warm or at room temperature. Enjoy!
These Pineapple Crunches are deliciously sweet and crunchy, perfect for dessert or as a snack. Feel free to adjust the sweetness according to your preference by adding more or less sugar to the pineapple filling.
