Preheat oven to 350F. Line an 8×8-inch pan with aluminum foil and spray with cooking spray. Set aside.

In a large microwave-safe bowl, melt the butter for about 90 seconds.

Add the brown sugar and vanilla to the melted butter and whisk until smooth.

Mix in the flour, oats, baking soda, and salt until a thick dough forms.

Press half of the mixture into the prepared pan to form an even layer.

Bake for 10 minutes. While baking, prepare caramel sauce by melting caramel squares with heavy cream.

Remove the pan from the oven and sprinkle the chocolate chips evenly over the top.

Pour the melted caramel evenly over the chocolate layer.

Crumble the remaining oatmeal mixture over the caramel layer.

Return to the oven and bake for an additional 15 to 18 minutes until golden and bubbling.

Allow to cool completely before slicing to let caramel set.