Learning how to cook with dehydrated food is a must for any prepper. So is learning how to cook fresh ground grain but that is another thread. I cook something with dehydrated food on an average of twice a week. Aside from soups (naturally) the best thing I have found for dehydrated food is omelets. You get the yummyness of heaps of veggies without the sogginess.
Are you just-covering the veggies in boiling water? After they rehydrate, put them in a colander, give a good jiggle around to get the extra water out. Some blot with a tea towel or paper towels, too. Then try sautéing in a plunk of butter and garlic and/or onions. Dehydrated shredded potatoes need to drain a bit longer before frying up. This has been my experience for the last 3 years with eating my home-dehydrated stuff. ;)
Debbi