1 cup corn syrup
1 cup peanut butter
Mix the above ingredients in a sauce pan that has a nice heavy bottom. Heat (on medium) until you JUST START to see bubbles around the edge of the pan (watch and stir, because this mixture wants to scorch if you heat it too fast).
As soon as you see the little bubbles around the edges of the pan, remove from heat and stir in 1 teaspoon of vanilla; mix well.
Pour over 6 cups of Rice Krispie cereal and mix well. If you are going to add the miniature chocolate chips; add them after the peanut butter mixture has coated the cereal; the heat of the mixture will melt them just a little, so don't add the chocolate too early.
Pour into a lightly buttered 11" x 7" dish. Pat down with slightly dampened hands. Allow to cool completely and cut into squares.
NOTE: I don't butter my dish, I spray it with vegetable spray and then use a paper towel to wipe out the excess, that way the squares don't have a "greasy" side and the squares DO NOT STICK to the pan.
NOTE: If you have any treats left, after your family descends upon these, store them in an airtight container, or cover tightly with plastic wrap.