Ingredients
- 1 (19 1/2 ounce) package brownie mix
- 1/2 cup vegetable oil
- 1/4 cup water
- 3 large eggs
- 2 cups semisweet chocolate chips , divided
- 2 cups miniature marshmallows
- 1 cup coarsely chopped roasted lightly salted peanuts
Directions
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Preheat oven to 350°; position oven rack in the lower third of the oven.
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Spray the bottom only of a 13 × 9 inch baking pan with nonstick cooking spray.
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In a bowl, mix the brownie mix, oil, water, and eggs with a wooden spoon until just blended and all dry ingredients are moistened.
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Stir in 1 cup chocolate chips; spread batter into prepared pan.
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Bake 28-30 minutes or until toothpick inserted 2 inches from side of pan comes out clean or almost clean (do not overbake).
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Remove pan from oven and immediately sprinkle with marshmallows, remaining 1 cup chocolate chips, and the peanuts.
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Cover pan with cookie sheet for about 5 minutes to soften (slightly) the chocolate chips and marshmallows.
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Remove cookie sheet; transfer to a wire rack and cool completely.