Preheat your oven to 350°F (175°C) and grease a 9-inch round cake pan.
In a large bowl, whisk the eggs until light and fluffy. Add the condensed milk, melted butter, and vanilla extract. Stir until smooth.
In another bowl, whisk together flour, baking powder, and salt. Gradually add the dry ingredients into the wet mixture, stirring gently.
Fold in the crushed pineapple. Don’t overmix—just enough so it looks like they’re best friends.
Pour the batter into the greased pan and smooth out the top.
Bake for 30-35 minutes, or until a toothpick comes out clean and the top is golden.
Cool before slicing. Or don’t—just blow on it and call it rustic.