Chill your glasses. Pop two tall glasses in the freezer for 10 minutes.
Cold glasses keep the shake thick longer and make it feel extra special.
Crush the speckled eggs. Place the candy eggs in a zip-top bag and crush lightly with a rolling pin. Aim for pea-sized pieces so they add crunch without clogging your straw.
Blend the base. In a blender, add the ice cream, 3/4 cup milk, malted milk powder, vanilla, and a pinch of salt. Blend until smooth and creamy.
If it’s too thick, add a splash more milk.
Fold in the candy. Add about two-thirds of the crushed eggs to the blender and pulse just 1–2 times. You want visible speckles and bits, not dust.
Taste and adjust. If you want more malt flavor, add another tablespoon of malted milk powder and blend briefly. For more sweetness or texture, stir in more crushed eggs.
Pour and top. Pour into chilled glasses.
Finish with whipped cream, a drizzle of chocolate or caramel sauce, and a sprinkle of the remaining crushed eggs.
Serve right away. Milkshakes wait for no one. Hand over a wide straw or a long spoon and enjoy immediately.