Avalanche Bark

My sweet niece Saren is getting married in a few weeks.  For her bridal shower given by her darling sisters Brittany and Bridget, I brought a delicious goodie called Avalanche Bark.  I got this recipe a few years back from a co-worker who used to work at Rocky Mountain Chocolate Factory.  She said this is the recipe they use to make their delicious treat.  I had a few requests for the recipe and promised Bridget I'd post it.  So Bridget, here's the recipe.  Enjoy!  :)

AVALANCHE BARK

3 bags plus 3/4 c. white chocolate chips
2 cups creamy peanut butter
6 ¼ cups Rice Crispies cereal
5 cups mini marshmallows
1 bag mini semi sweet chocolate chips (reserve ¼ cup for the top)

In a large bowl, melt the white chocolate chips in the microwave starting with 1 minute on high and then at 30 second intervals stirring after each time until melted and smooth. (White chocolate burns very easily so stir well after each time and do not overheat) Stir in peanut butter until well mixed. Pour rice crispies into a larger bowl and stir in the chocolate/peanut butter mixture. Let mixture cool to room temperature and then add the marshmallows and the mini semi sweet chocolate chips and stir until everything is coated. Line a 15 x 10 x 1 inch-baking sheet with wax paper and spread out mixture. Sprinkle the remaining mini chips on top and lightly press into the mixture. Allow to cool for 2 to 3 hours at room temperature or in the refrigerator for 30 minutes and the cut into pieces.  (You can also halve this recipe and use a 9x13 pan, just remember to line the pan with wax paper.)