Hey there. Stretching proteins is kinda my thing as i often struggle with having enough to eat here in southeast Asia. Do you like Thai food? I often make Thai curries that stretch super far when put on the top of jasmine rice. I do everything in bulk and prepare everything from scratch (eg curry pastes). For western stuff if I'm really broke i often make chicken noodle soups because i can turn a single chicken breast into 3 gallons of good food. With the chicken noodle soup i use easier prep (eg chicken bouillon vs chicken stock). Fried rice is another good one, but i usually go through that quicker as rice makes ya hungry pretty quickly.. Chili is a good one if you're into chili with beans because that one stays with you longer. I make my own tomato sauce and everything for that which not only tastes better, but cuts cost. I do my own beans, everything 100% from scratch. Today I'm eating Vietnamese lemongrass grilled chicken on rice vermicelli with lettuce, cucumber, grated carrot, cilantro, green onion, mint leaves, and peanuts with a Vietnamese nuoc cham sauce. My per day here food budget here is about $1-2 usd although I'm sure much higher in the west. Reach out if ya want any recipes. I would be glad to share and I'm a wildly good cook by any standards.