Mine each get a big salad every morning. about 1 1/2 cups for the single, 3 cups for the pair. They usually get a mix of parsley, cilantro, and leaf lettuce. Right now they are also getting kale, it has been looking really good and the price is down, but I just split one leaf among them. I try to throw an "extra" veg into the normal salad, but I keep it to low quantities. Winter will bring brussels sprouts (1/2 per bun), spring chicory leaves, summer fresh herbs, the occasional baby carrot, etc.
They also get fruit every day. But it's not very much: Each bunny gets 1 slice of fresh banana each morning (or a banana chip if I'm out of fresh). Amelia will not accept fruit substitutions in the morning, there is banana or I am in trouble (she won't even eat another fruit in the morning, even ones she likes as treats.) Plus one raisin or dried cranberry in the evening, along with a Papaya tablet. Amelia won't eat the papaya tablet, though, so only Tobi and Nick get them.
Produce prices were so high this year! I have had to cut into my own grocery budget a bit to make sure the buns have fresh veg every day. They love the veggies so much, I can't deny them.