Strawberry Upside Down Cake

1 (18.25 ounce) package white cake mix

1 (6 ounce) package orange flavored Jell-O® mix

2 (10 ounce) packages frozen strawberries, thawed

1 (10.5 ounce) package miniature marshmallows

Preheat oven to 350 degrees F (175 degrees C). Grease a 9x13 inch pan. Put a single layer of miniature marshmallows on the bottom of the pan.

Prepare cake mix according to package instructions. Pour batter over marshmallows in pan.

Mix gelatin powder and strawberries in a medium bowl. Pour over cake batter in the pan.

Bake according to package instructions.