In the bowl of a food processor, add the walnuts and bread (or bread crumbs). Pulse until they are finely ground into a sandy texture.
Add the drained roasted red peppers, lemon juice, balsamic vinegar, maple syrup, and chili paste to the processor.
Blend until the mixture is smooth and well combined.
Add the salt and ground cumin. With the processor running on low, slowly stream in the olive oil and continue to blend until the dip is creamy.
Stop and taste the dip.
Adjust the seasonings as needed—you might want more chili paste for heat, salt for flavor, or a little more olive oil for a smoother consistency.
Transfer the dip to a serving bowl.
Garnish with a sprinkle of chopped fresh parsley and extra walnuts.
Serve immediately or cover and refrigerate until ready to use.