Step 1: Preheat your oven to 400°F (200°C) for even baking.
Step 2: Grate 2 cups of zucchini, then wring out excess moisture using a towel or cheesecloth.
Step 3: In a large mixing bowl, combine ground turkey, drained zucchini, minced garlic, grated red onion, eggs, Italian seasoning, salt, and black pepper. Mix until just combined.
Step 4: Form the mixture into meatballs, about 1 to 1.5 inches in diameter, and place on a baking sheet lined with parchment paper.
Step 5: Bake the meatballs for 25-30 minutes until golden brown and cooked through. Use a meat thermometer to check for 165°F (74°C).
Step 6: For the sauce, heat olive oil in a skillet, add minced garlic, and sauté. Then add crushed tomatoes, salt, black pepper, sugar, Italian seasoning, and red pepper flakes. Simmer for 10-15 minutes.
Step 7: Once meatballs are baked, add them to the skillet with sauce and gently toss to coat. Serve warm!