Cinnamon Roll Coffee Cake

I love the recipes that Val posts on her blog, ValSoCal . Came across this coffee cake recipe and new I had to try it. I don't really bake a lot, but figured this was easy enough, and it would probably taste good no matter what.

Ingredients

1 tube Large refrigerated cinnamon rolls with cream cheese icing (I used 2 tubes, to fill in holes)

2 (8 oz) packages cream cheese, softened

3 eggs

3/4 cup sugar

1 tsp vanilla extract

1/4 cup chopped walnuts or pecans (optional, I left these out)

1/4 cup all purpose flour

1/4 cup quick cooking oats

1/4 cup brown sugar

1 1/2 tsp cinnamon

3 Tbsp butter, melted

whipped cream and additional cinnamon for topping (option, I also left these off)