The only caveat to using an oven, if it goes above 145F, it will destroy many of the nutrients and necessary enzymes in the plants. That's why a dehydrator is best, at the temps you mentioned. Ditto cooking with the powder...
I never thought of making this, as I never used the store stuff.... It's much like what I make for the layers in winter...
Somehow all this working with greens has me craving some kale chips - I bet you could do them with any greens - a little salt and oil - yum! :) (I think I might be the only person who thinks they are cool still).
So glad to have a dehydrator, it never stops going in the summer - powered by the sun which makes it even better! You have multiple dehydrators right?
Yes, 2 Excalibur 9 trays.
I love kale chips, especially with homemade tahini dried on them! SO addictive!