1Heat oven to 350^ degrees.
Grease 9x13-inch baking pan and set aside.
Mix oats,Bisquick,sugar, butter and cinnamon. Set aside.
2Beat remaining ingredients with whisk until well-blended.
Pour into prepared pan.Spread evenly.
Sprinkle with oats mixture.
Bake until light golden brown, about 20-25 minutes.
Serve warm with ice cream or whipped topping.
---Another great topping is to spoon some sweetened condensed milk over this, instead of the ice cream or topping.