Preheat oven to 400 degrees F. Slice the tomatoes in half, sprinkle with a little olive oil, salt and pepper and slide into the oven. Roast for 20 minutes.
Remove the center stem from the chard or kale, and discard. Slice into thin slices across the width of the leaves. Wash thoroughly. Bring a large pot of well salted water to a boil and slide the chard in. Simmer until thoroughly wilted, about seven minutes. Drain and rinse with cold water. Squeeze as much water out as possible. Set aside.
Cook the quinoa using these instructions
Preheat the oven to 350 degrees F.
Heat one - two tablespoons olive oil in a large sauté pan and add the onion and shallots. Sauté until softened. Place in a large metal bowl. Add the chard and roasted tomatoes and 3/4 cup of the cooked quinoa.
In a separate bowl, whip together the remaining ingredients except the tomato sauce and bread crumbs.. When the onion mixture has cooled, stir in the egg mixture, and mix well. Add 2 tablespoons of the bread crumbs.
Combine the remaining 1/4 cup of cooked quinoa and 1/4 cup breadcrumbs in the bowl that held the egg mixture. There is likely just a little egg remaining in the bottom of the bowl. Mix together.
Form croquette domes with your hands and place on a parchment or foil lined baking sheet. Pat one to two tablespoons of the quinoa-breadcrumb coating on each of the croquettes.
Bake for 20 minutes.
Serve with tomato sauce.