Make zucchini spaghetti using a mandolin, spiralizer or mini julienne peeler. Place in a large bowl and toss with a teaspoon of olive oil and sprinkle of sea salt, set aside.
Heat olive oil in a large pan over medium heat. Add onion and sauté until translucent. Add garlic and saute for an additional minute or until fragrant.
Add crumbled tempeh and sauté for 5 minutes or until lightly browned.
Add tomato, tomato paste, vegetable broth, italian seasonings, salt and pepper and simmer for 20 minutes.
Divide zucchini spaghetti among two bowls and top with tempeh marinara sauce.