Line the bottom and sides of a 9x13-inch baking pan with parchment paper, using oven-proof clips to secure it to the sides.
Place half of the almond bark in a microwave proof bowl and heat according to the package directions, until it's smooth and creamy.
Pour the melted almond bark into the prepared pan and smooth it out into an even layer.
Place the Oreo's in single layers on top of the melted almond bark, pressing them into it slightly.
Place the rest of the white almond bark in the same bowl you melted the first half in, and melt it according to package directions, until it's smooth and creamy. Then pour it over the Oreo's and carefully spread it out so that it's covering all of the Oreo's.
Place the color candy melts into bowls and microwave each one for 30-second intervals at 50% power, stirring after each heating, until the candy melts are smooth and creamy. It took me a total of three and a half minutes for each.
Using a spoon, drop globs of melted red candy on top of the white.
Next, using a spoon drop globs of melted bright pink.
Then, using a spoon drop globs of melted light pink.
Using a thin wooden skewer, gently swirl all the melted candy together. If the white has hardened and you are unable to swirl, pop the pan in a 350°F oven for about 5 minutes.
Unwrap the Reese's Peanut Butter Hearts and place them in alternating directions in between where four Oreo's meet, pressing them down slightly into the melted candy.
Place some Valentine's Day M&M's scattered around the top.
Then finish the bark off with some Valentine's Day sprinkles. Remove the clips from the pan and place it in the refrigerator for 30 minutes to allow the chocolate to harden. After 30 minutes have passed, remove the pan from the refrigerator. Then allow it to harden completely for a few hours before cutting into pieces.
To cut it into pieces, lift the parchment out of the pan and place it on a cutting board. Then using a large kitchen knife cut the bark into pieces.
Yield 24 pieces