1 large banana
1 large orange (sometimes I use a few cuties, whatever I have on hand)
2 1/2 cups frozen pineaple
1 tbsp agave nectar (or honey if that tickles your fancy)
2 handfuls fresh baby spinach**
(I put the ingredients in the blender in the order that I wrote them)
**Here's a handy tip for making sure that baby spinach doesn't go to waste: I usually buy mine from costco and we can't eat it as quick as we need to, so after about 5 days of having it in my fridge I throw all of it in my blender with just a splash of water and pour it in ice cube trays. After they're frozen I put them in ziploc bags and store them in the freezer and use 1 or 2 of them anytime I make a smoothie.
p.s. if you wanted to opt out of the agave or honey you totally can. I've made it plenty of times without it, just know that if your orange is super tart you'll notice it more :) enjoy!