A few months ago I found out that you could buy spinach frozen in little cubes which I thought was brilliant. That led to me thinking "I could do that!" Thankfully we've had an abundance of spinach this spring so I've had to resort to freezing some a couple times already. It's really easy, quick, and seriously so handy.
Unfortunately I didn't take any step by step pictures when I froze some last but really it's so simple you don't need them.
Here's what you do:
Wash your spinach.
Blanch it! (full instructions here)
Drain the water out well and puree it in a blender or food processor
Scoop it into ice cube trays, tamp them down a couple of times to get air bubbles out.
Once the spinach is totally frozen pop them out and put them in a freezer safe container.
One or two cubes is seriously close to a huge bowl full of spinach so adding a couple of cubes to your dinner packs a lot of spinach punch. I also add these to smoothies, 2-3 cubes doesn't change the taste or texture at all and adds a lot of nutrients.