I feed the 'UK diet'
Make a batch of 5 or 6 different fruits veg (example: papaya, mango, blueberries, sweet potato, butternut squash). Cut up and blend into a smoothie mix. Add 2 tablespoons of natural yogurt, 2 tablespoons of Wheatgerm and 3 tablespoons of soaked Linseed (put linseed in a bowl, add hot water and wait until it absorbs and becomes oily). Blend together, then add suppliments - 1 teaspoon of Bee Pollen, 1 teaspoon of Glider Cal, half a teaspoon of Acacia Gum, 2 tablespoons of Wombaroo High Protein Powder. Blend again, pour into ice cube trays and freeze.
For protein, 5 days a week I feed 6 pieces of high quality cat kibble per glider. They love them and with the rest of their diet being blended I feel a bit of hard food is good for their teeth. They have them in the first place, put them to use! (You may hear the 'gliders are sap-suckers' statement, this is true but they don't suck on trees to get to the sap, they gauge and strip off the bark first! They also eat hard shelled beetles in the wild so they are more than capable of eating kibble). For the other 2 days a week I feed egg, either scrambled or in an omelette as mine wont eat plain boiled.
I've been using this diet since I brought home my first pair of joeys, March 2011.
This takes about 20 mins to prepare and as I make it in a batch and freeze into ice cube trays it make a weeks worth at a time. Each night I just take out 3 cubes per glider and put them in a dish to defrost an hour or two before feeding time. So each night it takes a few minutes to get the cubes out and when defrosted put into their food bowls.
My gliders all look fantastic. They have big appetites and are very active. My intact male I brought home when he was 2yrs old, he looked abit tatty - fur seperation, scrawny tail, within 2 months he looked in perfect condition, so for me that is proof that it is a good diet.
I don't have any fussy eaters, I have never had to take any of mine to the vets for anything but neuters. I also breed mine and the diet has done great for my females and joeys. Joeys are very healthy and with the fruits/veg being blended they've all been starting on adult food at around 4wk OOP.
I use this diet because it was the one I liked to the sound of the best when I started researching gliders. It's flexible, you aren't restricted to certain fruist and veg or proteins. I'm not comfortable with the amount of honey in other diets, it seems to promote fussy eaters - to which peoples response seems to be to cover the untempting food in more honey! It's easy to prepare, altho not 'recognised' in the US it has been used in the UK for over 10years with great results. It's 'proven' itself to me.
All the products (apart from the suppliments) can be bought in normal shops. All the suppliments are Exotic Nutrition products which you can order cheap from their online website.