This quick and easy pepper sauce can be made ahead and refrigerated in an airtight container for up to four days.
1. To prepare romesco sauce, place first 9 ingredients in a blender or food processor; process until smooth.
2. To prepare filling, heat a medium saucepan over medium-high heat. Add 1 tablespoon oil to pan; swirl to coat. Add onion; sauté 4 minutes or until onion begins to brown. Add 1 teaspoon garlic and ginger; sauté 30 seconds, stirring constantly. Stir in quinoa; cook 1 minute, stirring constantly. Add broth, 3/8 teaspoon salt, and 1/4 teaspoon black pepper; bring to a boil. Cover and simmer 20 minutes or until quinoa is tender and liquid is absorbed.
3. Combine quinoa mixture, parsley, dill, and chickpeas in a bowl. Cut tops off tomatoes; set aside. Carefully scoop out tomato pulp, leaving shells intact; discard pulp. Divide quinoa mixture evenly among tomato shells; replace tomato tops. Spoon romesco sauce around stuffed tomatoes.