Combine the flour and salt in a small bowl. Use a piping bag or wide-opening funnel to add the mixture to the bottom of a clean, completely dry wide-mouth quart jar. Tap to level.
Sift or whisk the cocoa powder to remove lumps, then add it in an even layer and gently press down.
Add the brown sugar, packing it firmly to make room for the remaining ingredients.
Add the granulated sugar in an even layer.
Top with the chocolate chips, secure the lid, and attach the printable baking instructions with twine or ribbon.
Bake the Brownies
Preheat the oven to 350°F. Grease a 9-inch round cake pan or line it with parchment paper. The wrappers from the two sticks of butter can be used to grease the pan.
In a large bowl, whisk together the melted butter, eggs, and vanilla.
Add the entire contents of the jar and stir with a spatula just until combined.
Spread in the prepared pan and bake for approximately 30 minutes, until a toothpick inserted in the center comes out with moist crumbs. Cool before cutting into nine brownies.
Notes
Use a wide-mouth quart jar; a regular-mouth jar makes it hard to level and tamp down the layers.A piping bag lets you direct ingredients more easily than a narrow funnel.Tested in a 9-inch round cake pan at 350°F for 30 minutes; a 9-inch square pan may bake differently, so check for doneness.
Made this recipe?Click the stars ⭐️ below to rate it or leave a comment—I’d love to hear how it turned out! And if you enjoy my recipes, click the button below to add Grits and Pinecones as a Preferred Source on Google.