Pre-heat oven based on the directions on your box mix.

Then add the boxed cake mix to a bowl along with the 3 eggs and ⅓ cup of the softened butter into a large mixing bowl.

Blend the ingredients until combined and a thick batter forms.

Now add in the water and slowly mix into the batter until smooth and thin. Set aside.

In a smaller bowl, melt the ¼ cup of butter in the microwave. Then add in the brown sugar and stir together with the melted butter until the two ingredients are combined

In the bottom of each muffin tin, place a large tablespoonful of the brown sugar mixture.

On top of that, place each of the pineapple rings.

Now take a large cookie scoop and fill each muffin well ¾ way full of cake batter.

Bake in the preheated oven for 20-25 minutes or until a toothpick inserted into the center of the cake comes out clean and the little cakes are golden brown.

Once the mini pineapple upside down cakes are done, allow the mini cakes to cool in the pan for about 10 minutes.

Flip the muffin pan onto a clean surface covered with parchment paper and gently tap the bottom of the pan to release the cakes.

Serve on their own or with a dollop of whipped cream or a scoop of vanilla ice cream.