Caramellows

1 . Stage

Spray an 8"-x-8" baking dish with cooking spray and line with parchment, leaving a 2" overhang on two sides. Grease parchment and a spatula with cooking spray. 

2 . Stage

Make the caramel: In a heatproof medium bowl, microwave caramels until melted, stirring every 30 seconds, about 2 minutes total. Carefully, (the bowl will be hot!) pour caramel mixture into prepared baking dish and smooth top with spatula. Let sit at room temperature; do not refrigerate. 

3 . Stage

Turn mixer on to a medium-low speed and carefully drizzle hot syrup down the side of the stand mixer bowl. Add vanilla and a large pinch of salt and beat on high speed until fluffy, glossy, and tripled in volume, about 6 to 8 minutes. 

4 . Stage

Using a greased spatula, quickly pour marshmallow mixture on top of the caramel and spread into an even layer. Let sit at room temperature for at least 3 hours, preferably overnight. 

5 . Stage

Make the coating: In a heatproof medium bowl, microwave chocolate and oil until melted and smooth, stirring every 30 seconds. Set aside to cool for 10 minutes.

6 . Stage

Refrigerate until set, about 15 minutes. Serve immediately.