Make the "steaks". First cook the split peas according to the package. You need 2 cups of cooked split peas, so I cooked about 1 cup of dried split peas. Once they are cooked through, and soft enough to mash, drain them, measure 2 cups and place them in a large mixing bowl, and mash the peas with a fork or a potato masher. Mash until the peas are all mashed.
Preheat oven to 375 degrees.
Then add all of the remaining ingredients for the "steaks" to the mixing bowl. Start to stir to combine, then once the wet and dry start to combine, begin to knead with your hands. Knead the split pea mixture until it is nice and firm. About 2-4 minutes(the longer you knead the mixture the firmer it will be)
Now spray a baking sheet with non stick spray.
Then form the split pea mixture into "steaks". Take a large ball of the mixture(however large you want the steaks), then flatten into a steak, and kind of elongate them.
Repeat until all the mixture has been used, then place them on the baking sheet. Bake for 15 minutes at 375 degrees, then flip the steaks and bake for another 10-15 minutes until they are nice and firm and a bit brown.
While the steaks are baking, make the onions and sauce.
In a cast iron or non stick skillet, heat the olive oil for the onions on medium low. Saute, reducing heat as needed until the onions start to get brown. Then add the agave and a pinch of salt. Continue to saute until they are nice and caramel colored. It may take 10 minutes or so. Remove from heat.
Now make the BBQ sauce. Add all the BBQ sauce ingredients to a small mixing bowl, whisk to combine. Taste and adjust seasoning.
Once the steaks are cooked, place some BBQ sauce on one side of the roll, then split pea steak, then onions, then arugula, then more sauce. Serve immediately!