This is a fairly easy cake to make in a classic 10" Cast Iron Skillet.
Here's what you'll need:
Preheat the oven to 350 degrees.
1 - 10" Cast Iron Skillet sprayed well with Cooking Spray.
1 - 21 oz. can of Blueberry Pie Filling
1 - 20 oz can of Crushed Pineapple, undrained.
1 - 18.25 oz. box of Duncan Hines Lemon Cake Mix.
12 TBS Butter cut into TBS pieces.
In the Skillet:
Blueberry Pie Filling
Spread evenly with a Silicone Spatula.
Gently swirl into the Pie Filling with the handle of a Wooden Spoon.
Sprinkle Cake Mix evenly over the Fruit. Don't mix.
Top evenly with pieces of Butter. Don't Mix.
Bake for 50 - 60 minutes.
The top should be Golden Brown and Bubbling.
Remove pan to a rack or stove top to coo for 10 minutes.
Serve warm with Vanilla Ice Cream of Whipped Cream.
Peace in the Kitchen!