• Prepare a 9-inch round cake pan with nonstick cooking spray. Set aside.

Green Rind

• Add 2 Tablespoons of unsalted butter to a large pot over low heat and melt it gently. Then add 2 cups mini marshmallows and stir until melted and smooth.
• Stir in ¼ teaspoon of pure vanilla extract, a pinch of kosher salt, and green gel food coloring until the marshmallow mixture resembles a watermelon rind.
• Remove the pot from the heat, add 1 ½ cups Rice Krispies cereal, and gently fold until the cereal is evenly coated.
• Press the green cereal mixture around the outside edge of the prepared 9-inch round cake pan to form a thick green rind border, leaving the center open for the pink watermelon layer.

Pink Center

• Use another pot or saucepan and add 4 Tablespoons of unsalted butter. Place it over low heat and melt the butter gently.
• Add 4 cups of mini marshmallows and stir until melted and smooth.
• Stir in 1 teaspoon of pure vanilla extract, ¼ teaspoon of kosher salt, and pink or red gel food coloring until the marshmallow mixture resembles the inside of a watermelon.
• Remove the pot from the heat, add 4 ½ cups Rice Krispies cereal, and gently fold until the cereal is evenly coated.
• Press the pink cereal mixture into the center of the pan, gently pressing it against the green rind to ensure the whole pan is filled evenly.
• While the treats are still slightly warm, press 2 tablespoons of brown mini M&M’s or mini chocolate chips into the pink center so they look like watermelon seeds.
• Let the treats set at room temperature for about 1 hour, then lift them out of the pan.
• Slice into 8 triangular wedges so each piece looks like a little watermelon slice, then serve and ENJOY!