For the Mix
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5 cups all-purpose flour
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4 cups sugar
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1 1/3 cups unsweetened cocoa powder
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1 tsp salt
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2 tsp baking powder
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2 tsp espresso powder (optional)
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1 (11.5 oz) bag semi-sweet chocolate chunks
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4 (1 quart) jars
To make the browines
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8 large eggs, divided
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2 cups canola oil, divided
Steps
1
For the mix, in a very large bowl, whisk the flour, sugar, cocoa, salt, baking powder, and espresso powder (if using) until well combined. Stir in the chocolate chunks.
2
Divide mixture among the jars (about 3 cups each) and seal.
3
To make the brownies: In a large bowl, combine one jar of brownie mix with 2 eggs and 1/2 cup oil, stirring until smooth. Line an 8x8-inch baking pan with parchment and coat with cooking spray. Pour into preparted pan. Bake in 350° oven 25-30 min., until toothpick inserted in center comes out mostly clean. Cool completely on wire rack before removing from pan.
