To me, it looks like Amaranth. I like sauteing these like I do with other greens. They have a sweeter, more mellow flavor and most greens. I've started growing them in the garden, but the bunnies like them, too!

red stripe amaranth maybe?

Red Amaranth Leaves! I saute them over high heat with a bit of olive oil, salt, pepper and hot pepper flakes (sometimes some garlic). Once slightly wilted with a bit of browning I take them off the heat and add lime juice. It is a great side dish!

You could also roast in the oven on a baking sheet with the same ingredients as above (again don't add the lime juice until you take them out of the oven). The green amaranth leaves are my favorite!

As Aninhas said, it's red stripe amaranth. We grow this at home, and it tastes especially good with tofu! :)

Here's a little more information about them, from a seed store: http://www.evergreenseeds.com/redleaf.html

Wow ... I'm impressed by how fast the Kitchn readers could identify this (and come up with links and preparation ideas)! Now I know why I keep coming back to this blog on a daily basis! Good luck, Emily and congratulations to the respondents - (by the way, I had absolutely no idea ... but was glad to learn something)!

Thanks everyone! Sarajahii, you feed this to your bunnies? I was trying to figure out of my buns could eat this stuff, so it's good to know that it's bun-approved!

I just bought a bunch of these at a farmers market last week. They told me the same when I asked how to prepare: saute w/olive oil, salt, pepper, etc. Instead I made a pesto! Came out really good. I'm going back to the farmers market today hoping they have more

I've used this like spinach and it works great -- except don't try to use it in a creamed spinach recipe. Tasted great, but the pepto-bismol pink cream sauce didn't exactly look appetizing (from the red in the leaves).

@MessyMess, That's funny! I was talking about the bunnies that manage to get into my garden beds, but I do have an indoor bunny and while I've never given her Amaranth, I do know that she loves the Kale I grow for her. I'd check with the vet to see if they think Amaranth is good, too!

Yep, Amaranth. My mother use to make a simple soup with it:

-Saute 1tsp minced garlic in a little oil in a medium sauce pan, until lightly golden.
-Add 4 cups water
-Bring to a boil and add amaranth. Simmer for 5 minutes.
-Season with salt and pepper. Since my mum was Vietnamese, she seasoned with fish sauce.
- You can make this more substantial by adding cubed soft tofu or saute a little ground pork or chicken with the garlic.

It's a comforting soup and the amaranth has a lovely spinach-like sweetness. Not to mention that the broth gets tinged lightly pink from the red in the amaranth.

Aha! I bought this at my farmers market a few weeks ago, and the man called it simply Chinese spinach-I am guessing there is some overlap and that there might be more than one kind of green that falls under the category of "Chinese spinach."

I loved it, even more than spinach. It was so mild and tender, it sort of melts in your mouth. I added it to a steamed whole fish (with ginger and garlic).

I make a fabulous Jamaican Callaloo with Amaranth.

I saute fresh rice noodles with garlic and hot pepper in peanut oil. Throw in the amaranth and let it wilt, while you add tamari, black vinegar, and sesame oil. The amaranth will dye the noodles a beautiful pink.