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1
Preheat oven 350 degrees F rack in middle position.
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2
Spray 9x13 inch pan with non-stick cooking spray.
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3
Melt butter in a small bowl in microwave on high for 50 seconds.
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4
Add cookie crumbs to melted butter. Stir until everything is well moistened.
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5
Spread butter and cookie crumb mixture in the bottom of cake pan and spread evenly.
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6
Sprinkle the semi-chocolate chips evenly on top of crumb mixture.
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7
Arrange mini marshmallows on top of chips as evenly as you can.
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8
Open can of sweetened condensed milk and pour over the top of marshmallows as evenly as you can.
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9
Sprinkle white chocolate chips on top, trying for an even distribution.
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10
Measure chocolate cereal an spread on top, again as evenly as you can.
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11
Sprinkle milk chocolate chips on top.
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12
Press everything in the pan down with the flat blade of a metal spatula (if the cereal crunches a bit that is ok).
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13
Bake 350 degrees for 20-25 minutes.
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14
Remove bars from oven and let cool in the pan. When bars reach room temperature, cut into brownie-sized pieces right in the pan. Don't take them out unless you are going to eat them right away.
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15
You can now refrigerate the cookie bars in the ban to set up firmly.
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16
If you do not cut before refrigeration, you may have a problem. They're very firm when chilled.
