1. Prepare the Pan: Line an 8×8 inch baking pan with parchment paper, leaving some overhang for easy removal.
2. Melt the Chocolate: In a medium saucepan, combine the chocolate chips, sweetened condensed milk, and butter. Heat over medium-low, stirring constantly until smooth and melted.
3. Divide and Color: Divide the melted mixture into separate bowls, depending on how many colors you want. Add food coloring to each bowl and mix until well combined.
4. Create the Galaxy Effect: Drop spoonfuls of each colored mixture randomly into the prepared pan. Use a toothpick or skewer to swirl the colors together, creating a galaxy effect.
5. Add the Stars: Sprinkle edible glitter or star sprinkles over the top.
6. Chill: Refrigerate for at least 2 hours or until firm.
7. Cut and Serve: Lift the fudge out of the pan using the parchment paper overhang. Cut into squares and enjoy your cosmic creation!

Notes

• For a richer flavor, you can substitute half of the semi-sweet chocolate chips with dark chocolate chips.
• Make sure to stir continuously while melting the chocolate to prevent it from burning.
• Use gel food coloring for more vibrant colors without altering the texture of the fudge.