Black Bean Burger

I decided the other day that all this "from scratch" cooking was getting quite tiresome and that I wanted to get a few "easy" things to have on hand. I decided on some pre made meat alternative patties. Standing in the freezer section of whole foods, my jaw hit the ground when I saw that they wanted $6 for 4 patties! What? There must be gold in these things, nope, but there is dairy in most of them. So, I decided to make my own. This would be my second attempt at Black Bean Burger patties. The first was a total failure. They didn't stick together when cooking, they were way too thin. I guess not a total failure, as the flavor was good. So here I am with attempt number 2. Better, but still not on the mark. They were nice and thick, but still didn't hold together well when cooked. They did form a nice crisp crust when fried, but a chunk fell off when I flipped it. It tasted awesome, and was plenty filling, but was more like eating a sloppy joe(although not messy), instead of a "burger". This Recipe made enough for 13 patties. I cooked flavor into each ingredient to insure a flavorful patty.

1&1/2 to 2  Cup Cooked Black Beans cooked with cumin and garlic
3 Cups Cooked Brown Rice cooked with salsa
2 Cups Diced Small Veggies Slightly Roasted (I used half a zucchini, leek, Red and Yellow peppers, tossed in olive oil and garlic roasted on 350 for about 5 minutes)
1-1/2 - 2 Cups Re hydrated TVP(textured vegetable protein)
1/4 Cup Nutritional Yeast
1/4 Cup Flour
2 TBS. Cumin
1 TBS Chili Powder
1 TBS. Garlic Granules
Salt and Pepper to taste

Mix everything together. To form the patties I used a fried egg ring, thingy. Not sure what those are technically called, but they work perfectly for this. Line a baking sheet with wax paper. When making patties really squish it in there and them simply lift off the ring. I then popped them in the freezer and when they were frozen, put them in a plastic bag and stored in freezer. Today I took one out and put it on the griddle with a little oil and covered it with a lid. It warmed up with the pan which unthawed it. After about 5 minutes I flipped it and cooked on the other side a few more minutes. I had it on a Whole Wheat bun with a little Cashew Queso. I will keep at this recipe until I have it perfected, In the mean time I will enjoy my vegan sloppy joes! Any Input on ways I can get these to hold together better woould be greatly appreciated!