Wash vegetables and set up your kitchen. Preheat oven to 375°F. Cook lasagna noodles according to package directions. Drain and set aside.
Dice onion, carrots, and zucchini. Mince garlic.
Thaw spinach and drain well. In a bowl, mix spinach and cottage cheese and set aside.
Heat 1 Tbsp. olive oil in a large pan over medium heat. Add onions and carrots and cook until tender. Add garlic and zucchini and cook 2 more minutes.
Add ground turkey, salt, black pepper, and garlic powder. Cook 5 minutes.
Stir in ½ can tomato paste and 1½ cups chicken stock. Simmer 3 minutes.
Pour 1 cup pasta sauce into the bottom of a baking dish. Layer 4 lasagna noodles, then spread the turkey and vegetable mixture on top.
Add another layer of 4 noodles, then spread the spinach and cottage cheese mixture. Add the final 4 noodles on top.
Add ½ cup chicken stock to the pasta sauce jar, shake to combine, and pour 1½ cups sauce mixture over the noodles. Spread the remaining ½ can tomato paste on top.
Cover with foil and bake 45 minutes. Remove foil, sprinkle mozzarella cheese on top, and bake 3–5 more minutes until melted.