Yes, one can cook brownies without an oven. They may be cooked in a microwave, on a barbecue, in an Easy-Bake oven, on a stove top. There are also no-bake brownies.
You can also cook brownies in a bread machine.
I would have to experiment a bit, but if I were going to try, for the first attempt to replace the eggs I would add 1 teaspoon of oil and 1/4 teaspoon of baking powder. The yolk in the egg provides fat to the recipe and the egg whites give it some lift.
If you have a combi microwave, I suppose you could use that instead..
If you mean like taking the batter raw, and cooking it, then no. If you mean reheating it, why not!
You have to use an oven!!
by cooking it in the pan.
you don't
If Tommy has an oven then he can makes cookies, however without the use of the oven Tommy does not make cookies please refrain from making me so confused with you next question, you mental degenerate.
It can be, such as in the sentence, "I took out the cookies using an oven mitt."
No, cookies would not bake well on the barbecue.
Yes! Here is the recipe! (This is an Oven recipe!) Egg + Flour + Butter = Cookies! If you want to make chocolate cookies, this is the recipe! (This is also an Oven recipe!) Cookies + Chocolate = Chocolate Cookies!
It's perfectly possible to bake cookies without an oven. You can use a microwave, stove or toaster oven; the cookies will have to be cooked in a different way though so you'll either need to use a certain technique and/or a recipe especially for baking cookies without an oven (there are plenty of those online, just search "no-bake cookies").
Heat By heat
No, the shape of a cookie sheet has nothing to do with cookies burning. How cookies burn in the oven is usually due to heat circulation in the oven, evenness of heat in the oven, or the position of the cookie sheet relative to the heat source.
An oven
none
It can be either. Leaving the cookies in the oven too long is the effect of forgetting that there are cookies baking. Leaving the cookies in the oven too long is also the cause of burnt cookies.
You can make it using: Egg + Flour + Butter & put it in the oven http://www.fogu.com/hm6/chan5/cookingrecipes.php?&p=