Spray a 9x13 inch pan with a nonstick spray. You can place a sheet of parchment paper inside the pan to help you remove the finished treats from the pan.
In a large pot, melt your butter and marshmallows over medium heat, making sure you are stirring to prevent the marshmallows from burning.
Stir in the vanilla extract, then the cereal until well combined. Place the mixture into the 9x13 pan. Using a greased rubber spatula, press the mixture into an even layer in the pan.
Top the cereal with the crushed Oreos making sure to press them into the cereal.
Scatter the sprinkles over the top of the Oreos and gently press them down.
Place a toothpick into the bottoms of the peeps and stick them into the cereal. Sprinkle the eggs over the top.
Allow to sit at room temperature for 1 hour before serving.