I did to some degree. I have some issues with certain fruits and vegetables due to their fructose and alditole composition. So it’s not so easy for me, yet, but I made lasagna with alternative minced meat and oat milk, chili ‘con’ carne with the same minced meat, once with wheat basis, more times with peas. Sushi without fish or meat. But originally and natural vegetarian meals, I guess not really. At least I can’t remember right now.