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1
Preheat oven to 350 degrees.
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2
Lightly spray the sides of an 8 inch square pan and line bottom with parchment paper.
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3
Melt 1/2 of the butter, the cookie crumbs, the brown sugar and a pinch of salt together.
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4
Press this mixture FIRMLY in the bottom of the baking pan and bake for 12 minutes.
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5
Remove this from the oven after 12 minutes.
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6
In a heatproof bowl, combine the remaining butter, the unsweetened chocolate and microwave at 20 second intervals until melted, stirring at each interval.
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7
Allow this mixture to cool slightly.
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8
In a separate bowl, combine the eggs, sugar and vanilla and whisk well.
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9
Stir the chocolate mixture into the egg/sugar mixture and blend thoroughly.
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10
Add flour and mix until just combined.
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11
Pout this mixture over the cooled crust and bake until just set (about 20 minutes).
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12
Remove the pan from the oven.
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13
Set your broiler to high and place an oven rack about 3 inches from the heat source.
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14
Sprinkle the marshmallows on top of the bars and sprinkle the chocolate chips over the marshmallows.
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15
Broil about 1 minute or until marshmallows start to brown.
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16
MAKE SURE TO WATCH CAREFULLY!
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17
Remove from oven and allow to cool before cutting into squares.
