1. Prepare the Chocolate Shell:

1. Melt the Chocolate: Place the white chocolate chips into a microwave-safe bowl. Microwave in 20-second intervals, stirring between each, until fully melted. Add the vegetable oil to help the chocolate melt smoothly.
2. Add Pink Color: If you want to achieve the pink color for a Valentine’s vibe, add a small amount of pink food coloring and stir until the color is evenly distributed.
3. Mold the Chocolate: Using a spoon or a small ladle, spoon the melted chocolate into the heart-shaped molds. Gently tap the molds on the counter to release any air bubbles and ensure the chocolate is evenly spread.
4. Chill: Place the molds in the fridge for 20-30 minutes, or until the chocolate has fully set and hardened. This will form the outer shell of the cocoa bombs.

2. Prepare the Hot Cocoa Filling:

1. Mix the Cocoa Powder: In a medium-sized mixing bowl, combine the unsweetened cocoa powder, powdered sugar, and vanilla extract. Stir until smooth and fully mixed.
2. Add Marshmallows and Sprinkles: Carefully fold in the mini marshmallows and optional pink sprinkles or heart-shaped candies for a festive touch.
3. Fill the Cocoa Bombs: Once the chocolate shells are set, gently remove them from the molds. Spoon or pipe a small amount of the hot cocoa filling into each half of the chocolate shells.

3. Seal and Decorate the Cocoa Bombs:

1. Seal the Cocoa Bombs: To close the cocoa bombs, heat a small plate in the microwave for 10-15 seconds. Take one half of the filled chocolate shell and carefully place it on the warm plate for a few seconds until the edges begin to melt slightly. Quickly press it against another half of the shell to form a whole bomb.
2. Decorate (Optional): If desired, melt some additional chocolate and drizzle it over the top of the cocoa bombs or add extra sprinkles to make them even more festive.
3. Chill Again: Place the sealed cocoa bombs back in the fridge for 10-15 minutes to ensure they hold their shape.

4. Serve Your Pink Hearts Valentine Hot Cocoa Bombs:

1. Serve with Warm Milk: To enjoy your cocoa bomb, simply place it in a mug and pour hot milk over it. Watch as the chocolate melts and the cocoa mix and marshmallows are revealed. Stir to combine, and enjoy a rich, comforting cup of hot cocoa!
2. Optional Garnish: For an extra touch, you can top the hot cocoa with whipped cream, more sprinkles, or a few extra marshmallows.