Just got back from a trip where I tested out a pretty simple oven idea for my Caldera Keg F.
The oven itself is a Ortega Enchilada Sauce can wrapped with 3 wrist bands. Layering the wristbands, allows the can to sit perfectly within the rim of the Fosters can. I safety cut the lid, which remains on during baking. I also wrap the top in foil while cooking.
I used my MBD Bongo Pro for continuous fuel, but you could probably refuel whatever other stove works with the cone.
The recipe itself:
3.2 oz of just add water muffin mix
1/4 c. h2o for the mix (little more/less to get the right consistency)
1.5 c. in the Fosters pot
Pour water into Fosters pot, turn on the heat and place into cone.
Mix the water and muffin mix in a baggie and squeeze into the oven can.
Place the oven securely into the rim of the fosters can. Again, you can adjust the wristbands to form a good seal. Put the lid on the oven can and wrap with foil.
Place the cozy around the Fosters pot.
I usually give it about 35mins from the moment I turn the heat on. Be sure you have steam the entire time. Take the can out of the fosters pot and knock it upside down against a clean surface. Eat.
Worked very well for lemon poppy, banana nut and even buttermilk biscuits.