I don't know the recipe you are talking about....but to make corn bread in the same amount that is in one of those jiffy packages, I mix 1 cup flour, 1 cup corn meal ( not corn flour....this is coarse ground....like farina for dereal) 1/2 tsp salt and 1 stp baking powder.
To that I would add 2/3 cups milk, 1 egg and 1/2 a stick of melted butter....ir 1/4 cup vegetable oil.
Linda C

rosepetal, the Jiffy mixes are very sweet so you will need to add about 1/4 c of sugar if you use the above recipe and want it to taste like the Jiffy mix.

Here's a mix recipe that makes a lot more than you'll need. I don't know how much is in a Jiffy Mix. It's from KitchenCraftsnMore:

CORN BREAD MIX

8 cups flour, all-purpose
4 cups cornmeal
2 cups sugar
3 tablespoons baking powder
2 teaspoons salt

Mix all ingredients until just blended and store
in a moisture proof airtight container at room
temperature.

To Use:
Mix 1 1/2 cup mix, 1 egg, 1 cup milk, 1/4 cup oil
until well blended. Pour into well greased: 8x8 dish
or 12 count muffin tin. Bake 20-24 minutes at
425F degrees. Serve warm or freeze until needed.

thanks everyone.I do have corn meal...not sure why I called it cornflour..I'll give it a try..thanks again