Veggie burgers: Sweet potato and goat's cheese burger

So I thought it was time for me to let go of Mark Bittman's burger advice, and strike out on my own. I had a couple of burgers in mind, and then the recipe guide of the Albert Heijn also made some suggestions for spring burgers, but in the end I stuck with the first thing that came to mind when I thought about making my own burgers from scratch: sweet potato burgers. With some kind of cheese, preferably goat's cheese.
I Googled a couple of recipes and checked out my own previous work, and all of this combined I came to the following recipe:

Ingredients
400 g sweet potato, peeled and rasped
100 g goat's cheese, in small pieces
1 onion
2 toes garlic
2 eggs
3 tablespoons oats
chives
parsley
pepper

Chop the onion and garlic and combine with the sweet potato. Add all the other ingredients and combine to a mixture with your hands (this will turn your hands a nice bright orange, which was just in time for King's Day today). Leave to rest for about 10 minutes.
Then shape 4-6 burgers out of the mixture. Heat sunflower oil (or any other kind) in a frying pan and bake for 5-8 minutes on both sides. Serve any way you like.

Sounds pretty easy, right? Well, a couple of things didn't really go as planned.

Pre-burger mixture. Looks like I was making a carrot cake burger.

At first, I added only the one egg, but this didn't really work. The mixture was a) too wet and b) not in any way coming together as burgers. So I added another egg (which made two in total, as stated above) to help with the combining issues, and then I added more oats to help with the moisture. This all helped somewhat to get a proper burger mixture.

Carrot cake burgers a-baking.

Then for the burgers: I made four, as I was joined by my trusty burger tester, but they were way to thick. This meant that both sides were baking nicely, but the middle part was still pretty wet. Also, it made turning them pretty impossible. If I'd made six (or even eight) burgers out of the mixture, it would have worked out easier. The amounts were okay for two people, although maybe you could tone it down to 300 g sweet potatoes for two people (I only add a salad, nothing like chips or potatoes or anything). They were pretty unsteady to begin with, and their size didn't help, so these were the least consistent burgers I've made so far.

Sweet potato burger mess.

So they looked pretty messy. But what about the taste? Well, they tasted really really good. The overall taste was sweet (what can you expect, with sweet potato?), but not too sweet. The sweet potato came through nicely, as did the goat's cheese. The herbs were not that prominent, but they added something.  The texture was also really nice: crispy on the outside and quite moist on the inside. Very, very far removed from any meat burger you'll ever eat, but that's the whole point of vegetarian burgers!

I'd call this a burger success, although as with all my previous burgers, there are some points of improvement. But that's why we call it an experiment! Can't wait to try some of my other ideas.