Gather all ingredients in a spacious area. Melt 3 tablespoons of butter in a large saucepan over low heat, stirring occasionally.

Add 4 cups of mini marshmallows to the melted butter and stir until completely melted, forming a smooth mixture.

Remove from heat and stir in 6 cups of Rice Krispies cereal until evenly mixed and no dry pieces remain.

Let the mixture cool for about 5 minutes. Shape into egg forms using greased hands.

Prepare pastel icing by whisking powdered sugar with milk. Drizzle over shaped treats and add sprinkles before icing sets.

Arrange the decorated treats on a serving platter with spring-themed decorations for presentation.