Spray a 9x13 baking dish with non-stick cooking spray; set aside.
Add Rice Krispie cereal to a large bowl. Using a food processor or mini chopper, add the Easter M&M's White Strawberry Shortcake and grind until most are small pieces. Add the candies to the cereal and mix well.
In a medium saucepan over medium heat, add butter. Once butter is melted add marshmallows. Stir until marshmallows are melted.
Add melted marshmallows to the bowl of cereal and mix well.
Pour mixture to prepared baking dish and press into an even layer. Let sit for 30 minutes to one hour.
Once set, cut Rice Krispie treats with the flower cookie cutout. Place on a cooling rack. Melt both vanilla and chocolate almond bark, then sprinkle over back side of flowers. Place in the refrigerator for 20 minutes, or until chocolate is set.
Decorate the front side of the flowers however you like with sparkling gel and Easter M&M's Milk Chocolate. Place stick in the center bottom of the Rice Krispie treat.
Serve and enjoy!