It mostly depends on how you store them. If you freeze them then they would last along longer but the potency might decrease as I read in some forums. Storing at room temperature should last a month or 2 as they do go stale and mold as normal brownies do.
No, it does not. All of Easy Bake food packets do not expire.
Yes.
The same as cake mix. Approx. 3-5 months.
Brownie mix contains red algae, otherwsie known as carrageenan.
yes
Yes, you can. This will make your brownies richer and possibly sweeter. (This was done with Ghiradelli Brownie Mix)
Normally a brownie mix does not contain leavening agents, whereas a cake mix does include leavening agents. Also, a typical brownie mix will make much less batter than a cake mix.
I think that there is not.
Well never mix brownies in a mixer. Follow the recipe on the back of your box of brownie mix, and you should be fine. Your CRAP and some water.
no
Trail Mix - 2013 Pot-Brownie Trail Mix Business 1-2 was released on: USA: 10 March 2013
Obviously, you need a need a new brownie tin! If the brownies ran over the top of the pan while baking, that pan is too small for the amount of batter in your mix or recipe. Use a larger pan.
It is always safe to dispose of food that has expired, that is, passed the "use by" date printed on the package. But in common usage, most home cooks would not be concerned about the safety of a year-old brownie mix, as long as the box and inner plastic bag are not damaged.
Turning a brownie mix into brownies is a chemical change. When the ingredients are heated in the over, numerous chemical reactions take place. Because new substances are created in the process, the process is a chemical change.