If you want to venture outside of AirVenture to Oshkosh restaurants, here's a list I pulled on Yelp that may be good.
Lunch & Dinner
Ruby Owl
421 N Main St
Oshkosh, WI 54901
Lunch & Dinner
Gardina’s Kitchen & Bar
448 N Main St
Oshkosh, WI 54901
Lunch & Dinner
Ichiban Sushi House
1600 Capital Dr
Oshkosh, WI 54902
Lunch & Dinner
Tasty Thai
1027 S Main St
Oshkosh, WI 54902
Lunch & Dinner
Sakura Japanese Steak House (Sushi!)
330 N Koeller St
Oshkosh, WI 54902
Lunch & Dinner
HuHot Mongolian Grill
2059 Witzel Ave
Oshkosh, WI 54904
Breakfast
Planet Perk - City Center
100C City Ctr
Oshkosh, WI 54901
Breakfast
Pilora’s Cafe
910 N Main St
Oshkosh, WI 54901
Lunch & Dinner
Ruby Owl
421 N Main St
Oshkosh, WI 54901
Lunch & Dinner
Gardina’s Kitchen & Bar
448 N Main St
Oshkosh, WI 54901
Lunch & Dinner
Ichiban Sushi House
1600 Capital Dr
Oshkosh, WI 54902
Lunch & Dinner
Tasty Thai
1027 S Main St
Oshkosh, WI 54902
Lunch & Dinner
Sakura Japanese Steak House (Sushi!)
330 N Koeller St
Oshkosh, WI 54902
Lunch & Dinner
HuHot Mongolian Grill
2059 Witzel Ave
Oshkosh, WI 54904
Breakfast
Planet Perk - City Center
100C City Ctr
Oshkosh, WI 54901
Breakfast
Pilora’s Cafe
910 N Main St
Oshkosh, WI 54901