Heat olive oil in a small pot over low heat. Add shallot, garlic, salt, and black pepper and cook for 3 minutes, stirring frequently.
Add chopped tomatoes with juices, balsamic vinegar, cane sugar, oregano, and red pepper flakes. Cover and simmer over low heat for 20 minutes, stirring occasionally.
Blend the marinara sauce with raw cashews, tomato paste, sea salt, and ¼ cup water until smooth. Set aside.
Cook rigatoni in a large pot of salted boiling water according to package instructions until al dente. Reserve ¼ cup pasta water before draining.
Heat olive oil in a nonstick skillet over medium heat. Add zucchini, thyme, salt, and pepper and sauté until lightly browned, about 3 minutes.
Add drained cherry tomatoes, reduce heat to low, and cook 2 to 3 minutes until heated through.
Add spinach to skillet and toss gently until wilted. Season with additional salt and pepper to taste.
Stir reserved hot pasta cooking water into creamy sauce to loosen it. Toss pasta with creamy sauce until coated.
Divide pasta into bowls, top with sautéed vegetables and sprinkle with parsley or basil. Serve immediately.