‘Show-stopper’: With only 3 ingredients. I make it over and over—no shame.

To make this dessert feel a little more classic, you can sprinkle 1/2 to 3/4 cup of brown sugar in the bottom of the slow cooker before adding the pineapple (this technically adds a fourth ingredient, but it gives you a deeper, more caramel-like syrup). If you like a hint of spice, stir 1 teaspoon of ground cinnamon into the dry cake mix before adding the butter. For a slightly lighter version, you can swap half of the melted butter with pineapple juice from a second can of pineapple or use a light cake mix. Want more texture? Add a handful of chopped pecans or walnuts over the pineapple before topping with batter. If you only have pineapple tidbits or chunks, those work too—just spread them in an even layer instead of rings. Leftovers reheat beautifully: store them in the fridge and warm individual portions in the microwave for 20–30 seconds for that just-cooked, cozy-cake vibe on busy weeknights.