Preheat oven to 350 degrees F. Lightly grease a 13x9 baking dish or spray with nonstick spray.
In a large mixing bowl, mix together flour, oats, brown sugar, baking soda, and salt until well combined. Mix in melted butter, egg, and vanilla until well combined.
Spread about 2/3 of mixture onto bottom of prepared baking dish to form an even thin crust layer. You may need to use the back of a fork or your hands to spread evenly. Set remaining crust mixture aside.
Bake crust for about 12-14 minutes or until slightly puffed.
Meanwhile, place chopped apples, caramels, and cream in small saucepan over low heat. Stir until caramel is smooth and melted and apples are slightly soft.
Pour caramel apple mixture over baked crust. Sprinkle remaining crust mixture on top.
Bake an additional 15-20 minutes at 350 degrees F or until edges are slightly browned. Cool then cut into bars.
SNAPPY TIPS: Be sure to use a good cooking apple such as Granny Smith.SNAPPY SUBSTITUTIONS: You could also add some cinnamon or apple pie spice to the recipe, or your favorite chopped nuts, such as pecans or walnuts, would also be a great addition to the topping.