1/4 cup butter
10 oz. package miniature marshmallows
1 small box Butterscotch Instant Pudding
Lightly spray a 9x13 casserole dish with cooking spray.
In a large pot, melt the butter. Add the marshmallows and dry pudding mix.
Cook on low heat stirring constantly until the marshmallows have melted and is smooth. Add the rice krispies.
Pour into the sprayed casserole dish and press down.
Let cool and cut into squares.