Lightly grease the inside of a small slow cooker (about 3–4 quarts) with a bit of butter or nonstick spray to make cleanup easier.
Pour the pastel speckled candy eggs into the bottom of the slow cooker so they form an even layer. This should look like a colorful bed of eggs covering the base of the crock.
Add the white chocolate chips on top of the speckled eggs, spreading them out evenly but without stirring.
Pour the sweetened condensed milk over the white chocolate chips, making sure to cover as much of the chocolate as you can. Do not stir yet; keeping layers helps the eggs stay more intact.
Cover the slow cooker with the lid and set it to LOW. Cook for 1 to 1 1/2 hours, checking after 45 minutes. Every 20–30 minutes after the first check, gently run a heatproof spatula around the edges to prevent scorching, but avoid aggressively stirring the eggs at this point.
Once the white chocolate is mostly melted and the mixture looks glossy and thick, turn off the slow cooker. Gently fold the mixture just enough to combine the melted chocolate and condensed milk into a smooth fudge base, letting some of the speckled eggs stay whole or in big chunks. A few will crack and swirl color into the fudge, which is part of the charm.
Line an 8×8-inch baking pan with parchment paper, letting some overhang on two sides to create handles for lifting later.
Carefully spoon or pour the warm fudge mixture into the prepared pan, spreading it into an even layer with a spatula. If you see big clusters of candy eggs, you can nudge them around so they’re scattered throughout the pan.
Let the fudge cool at room temperature for about 30 minutes, then transfer the pan to the refrigerator and chill for at least 2 hours, or until fully set and firm.
Once chilled, use the parchment overhang to lift the fudge out of the pan and place it on a cutting board. Use a sharp knife to cut into 1- to 1 1/2-inch squares. Wipe the knife between cuts for cleaner edges.
Store the fudge in an airtight container, with parchment or wax paper between layers, in the refrigerator for up to 1 week. Let it sit at room temperature for 5–10 minutes before serving so it softens slightly.
Variations & Tips
For kids who are picky about texture, roughly chop half of the speckled eggs before adding them to the slow cooker so they melt in more and don’t feel as chunky, leaving the other half whole for looks. If your family prefers less sweetness, use 2 1/2 cups white chocolate chips and stir in 1/2 cup semi-sweet chocolate chips right at the end for a marbled effect. To make it festive for different seasons, swap in seasonal candy-coated chocolates (like red and green for Christmas or orange and brown for fall) while keeping the same base recipe. For a nutty twist, gently fold in 1/2 cup chopped toasted almonds, pecans, or walnuts when you stir the melted fudge together. If you don’t have a small slow cooker, you can use a larger one but push the ingredients to one side and watch more closely to prevent scorching. To make slicing easier, warm your knife under hot water, dry it off, and then cut; this helps keep the speckled eggs from cracking too messily. And if you want a slightly firmer fudge for packing into gift boxes, chill it overnight before cutting so it holds its shape even better.
