Pineapple Upside Down Cake

This is one of my favorite recipes of all times. I have had it for at least 30 years and use it frequently. One of her friends is going to be 89 and he loves this recipe and I was asked for it

• Ready In: 45 mins
• Yields: 1 Cake

Ingredients

• 1⁄2 cup  melted butter
• 1  cup brown sugar, packed
• 1 (20 ounce) can pineapple rings, drained
• 1 (18 1/2ounce) box  yellow  butter recipe cake mix
• 3  eggs
• 1 1⁄3 cups  whole milk
• 1⁄3 cup canola oil

Directions

1. Preheat oven to 350° .
2. Pour melted butter in 13 x 9 pan .
3. Sprinkle on the brown sugar.
4. Lay the pineapple rings evenly over the brown sugar. If there are any left break into pieces and fill in the spaces in the pan .
5. Combine cake mix, eggs,  milk and oil and mix well with an electric mixer for two minutes on medium speed until batter is smooth .
6. Pour batter evenly over pineapple and brown sugar.
7. Bake in preheated oven for 35 minutes or until cake tests done .
8. Let cake cool in pan for 30 minutes .
9. place cake platter over pan and invert cake onto cake platter.