I guess you could remove the knobs until needed. Other than that, you might try fabricating a cover out of aluminum flashing. Maybe you could hang it from the front burner openings and secure the bottom by inserting it in the oven door. Something like that would be pretty easy to remove when you need to use the stove.
This page might have what you need if you don't want to fiddle with making your own.
Happy Camping! ///// Richard D.
2006 4x4 Ford 250 SD / 2007 Flagstaff 827 FLS
One very patient wife and one furry child who travels with us. Forty-two years of trailering and camping, and I still have a blast.