Preheat oven to 325 degrees.
Line a 9x13 pan with parchment paper and lightly spray with non-stick cooking spray.
In a medium mixing bowl, cream together the butter and sugar until light and fluffy. Add in the flour and vanilla and mix until just combined. Mixture will be crumbly.
Gently press the shortbread mix in an even layer on the bottom of your prepared pan.
Prick all over with a fork.
Bake for 30 minutes until lightly golden.
Remove from oven and let cool while you prepare the caramel.
In a small pot over medium-low heat, stir caramels together with the cream until fully melted and no lumps remain.
Pour the caramel over the shortbread layer. Set aside.
For the chocolate layer, place each color of melting chocolate in a separate bowl.
Microwave each color in 30 second intervals until smooth and melted.
Pour the white chocolate over the caramel and spread out.
Add small dollops of the red and pink over the white chocolate.
Using a knife gently swirl the red and pink into the white. Make sure you do not drag your knife through the caramel layer or will look messy.
Immediately sprinkle with the Valentines sprinkles and place in the refrigerator for at least 20 minutes until completely cool.
Slice into squares and serve! Enjoy.