Prepare an 8x8 baking pan by lining it with parchment paper or tinfoil, so the paper comes up and over the sides of the pan. Set aside.
In a large bowl cream together the butter and sugars until smooth and creamy. Add in the vanilla and peanut butter and continue to beat until smooth. Mix in the egg, make sure to scrap sides of bowl occasionally.
Add the self rising flour in 3 batches, stirring in between.
Fold in the chocolate eggs, and press the batter into the prepared pan. Bake for 25-30 minutes or until the center of the blondies are set. Let cool on wire rack, use parchment paper to lift blondies out and cut into squares. Enjoy.