Preheat your oven to 325°F (160°C). This ensures that your macaroons bake evenly and develop a lovely golden color.
Line a baking sheet with parchment paper. This will make it easy to remove the macaroons once they are baked.
Open the can of crushed pineapple and drain the excess juice thoroughly. This step is crucial to avoid soggy macaroons.
In a large mixing bowl, combine the drained pineapple, sugar, salt, shredded coconut, egg whites, and vanilla extract. Stir until all ingredients are well mixed.
Using your hands or a cookie scoop, form the mixture into small mounds and place them on the prepared baking sheet. Make sure to leave some space between each macaroon as they will spread slightly during baking.
Place the baking sheet in the preheated oven and bake for 20-25 minutes, or until the macaroons are golden brown on top.
Once baked, remove the macaroons from the oven and allow them to cool on the baking sheet for 5 minutes. Transfer them to a wire rack to cool completely before serving.