Peanut Butter Brownies

6 eggs
3 cups sugar
1 1/2 cups brown sugar
1 cup peanut butter
1/2 cup shortening
1 tablespoon vanilla
4 cups flour
1 1/2 tablespoon baking powder
1 1/2 teaspoon salt
1/2 cup peanuts

Mix together and bake at 350 degrees for 25 minutes.