Place a canning funnel on top of a quart-size jar. Pour the flour into the bottom of the jar and tap the jar to level the top of the flour layer.
Add the cornstarch, baking soda, and salt. Tap the jar again to level the ingredients. Add the brown sugar. Use a spoon to press down the sugar and make it compact.
Next, add the sugar and tap the jar on the table to level the layer.
Pour the vanilla into the center of the sugar layer.
Top the sugar with mini chocolate chips. Lightly shake the jar to level.
Fill the remaining space in the top of the jar with the M&Ms.
Place the lid on the jar. Print out the gift tag and cut it out around the outer border.
Punch a hole in the corner of the tag and use the ribbon to attach it to the top of the jar.
Instructions for Baking the Cookies
Add 1 cup butter, softened, and 1 egg.
Preheat the oven to 350 degrees and line a baking sheet with parchment paper.
Beat together the butter and egg until smooth.
Add the contents of the jar and mix on low until the dough begins to come together. Use a cookie scoop or tablespoon to scoop the dough onto the baking sheet.
Bake for 12 to 15 minutes. Enjoy with a nice cold glass of milk.