Roasted vegetable quinoa salad

Ingredients

• 4 cups vegetable stock
• 2 cups quinoa
• 1 bag of broccoli florets
• 1 medium red onion, cut into 1/4-inch thick slices
• 1 red, yellow & orange bell pepper, cut into 1/4-inch thick slices
• 3 tablespoons olive oil
• Sea salt and freshly ground black pepper
• 1 tablespoon tomato paste
• 1/4 cup fresh lemon juice
• 3/4 teaspoon coarse sea salt