Fold pieces of heavy-duty aluminum foil into squares. Fit them snugly into the base of your slow cooker to create four separate sections.
Place one slow cooker liner into each foil section, folding the edges of the liner down so it sits securely within each compartment.
Carefully place 4 eggs into each sectioned liner. Make sure they're evenly placed to avoid crowding.
Choose your food coloring and add it to each bag. Adjust the amount based on how bright you want the colors to be.
Pour 3 to 4 cups of water into each liner, enough to fully submerge the eggs. Ensure that the eggs are completely covered in water.
Cover the slow cooker with its lid and set it to LOW. Allow the eggs to cook for 4 to 6 hours.
Once the eggs have finished coloring and cooking, use a slotted spoon to carefully remove them from the slow cooker.
Place the eggs on a tray lined with paper towels (or put back in the egg cartons) to dry completely before handling or displaying them.
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Notes
If you plan to store the eggs after dyeing, keep them in the refrigerator. They’ll last up to one week but should not be consumed if left unrefrigerated for too long during the dyeing process.
Gel food coloring provides vibrant results, but feel free to mix colors for custom shades. Pastel tones can be achieved by using less coloring.
The foil dividers are essential to keep the colors from bleeding into each other. Ensure the dividers are snug and don’t collapse under the water weight.
For extra creativity, use tape or stickers on the eggs before dyeing to make patterns. Remove them after the eggs have dried for unique designs.
Liquid food coloring can be substituted for gel but may require more drops to achieve rich colors.
Slow cooker liners make cleaning up effortless. Simply lift the liners out and dispose of them after dyeing. If any color leaks through, wipe your slow cooker with a damp cloth.