Sweet Potato Lasagna with Spinach, Ricotta, Walnuts And Cranberry Honey Sauce

Prep Time: 25 minutes
Cook Time: 50–60 minutes
Total Time: 1 hour 25 minutes
Servings: 6
Cuisine: Vegetarian, Mediterranean-Inspired
Category: Healthy Comfort Food
Ingredients
For the Sweet Potato Layers

• 3 large sweet potatoes, peeled and sliced lengthwise into thin slices
• 1 tablespoon olive oil
• ½ teaspoon salt
• ¼ teaspoon black pepper
• ½ teaspoon dried thyme
  For the Spinach and Ricotta Filling
• 2 cups ricotta cheese
• 3 cups fresh spinach, chopped
• 1 large egg
• ½ cup grated Parmesan cheese
• 2 cloves garlic, minced
• ½ teaspoon Italian seasoning
• ¼ teaspoon salt
• ¼ teaspoon black pepper
• ½ cup shredded mozzarella cheese
  For the Walnut Layer
• ¾ cup chopped walnuts, lightly toasted
• ¼ teaspoon ground cinnamon (optional)
• 1 tablespoon olive oil
  For the Cranberry Honey Sauce
• 1 cup fresh or frozen cranberries
• 3 tablespoons honey
• ¼ cup water
• 1 teaspoon lemon juice
• ½ teaspoon orange zest (optional)
• Pinch of salt
  For the Topping
• ¾ cup shredded mozzarella cheese
• ¼ cup grated Parmesan cheese
• 2 tablespoons chopped walnuts
• 1 tablespoon fresh thyme leaves or chopped parsley
  Instructions
  Step 1: Prepare the Sweet Potatoes

1. Preheat the oven to 375°F (190°C).
2. Lightly grease a 9 × 13-inch baking dish with olive oil.
3. Peel the sweet potatoes and slice them lengthwise into thin, even slices, approximately ⅛ inch thick.
4. Toss the slices with olive oil, salt, pepper, and thyme.
5. Arrange them on baking sheets in a single layer and roast for 10–12 minutes, just until slightly tender. This makes layering easier.
   Step 2: Prepare the Spinach and Ricotta Filling
6. Heat a skillet over medium heat with a small drizzle of olive oil.
7. Add the minced garlic and cook for 30 seconds.
8. Add the chopped spinach and sauté for 2–3 minutes until wilted.
9. Allow the spinach to cool slightly, then squeeze out excess moisture.
10. In a bowl, combine ricotta, egg, Parmesan, Italian seasoning, salt, black pepper, and the cooked spinach.
11. Mix until creamy and well combined.
    Step 3: Toast the Walnuts
12. Place the chopped walnuts in a dry skillet over medium-low heat.
13. Toast for 3–5 minutes, stirring frequently, until fragrant.
14. Remove from the heat and let cool.
15. Reserve 2 tablespoons for the topping.
    Step 4: Make the Cranberry Honey Sauce
16. Add cranberries, water, honey, lemon juice, orange zest, and a pinch of salt to a small saucepan.
17. Bring to a gentle simmer over medium heat.
18. Cook for 8–12 minutes, stirring occasionally, until the cranberries burst and the sauce thickens.
19. Lightly mash some cranberries with a spoon while leaving a few whole for texture.
20. Remove from the heat and allow the sauce to cool slightly.
    Step 5: Assemble the Lasagna
21. Spread a thin layer of the ricotta-spinach mixture across the bottom of the prepared baking dish.
22. Arrange a layer of sweet potato slices over the filling, slightly overlapping them.
23. Spread another layer of ricotta-spinach filling over the sweet potatoes.
24. Sprinkle with toasted walnuts and a little mozzarella.
25. Repeat the layers until all the ingredients are used, finishing with sweet potato slices.
26. Sprinkle the top with mozzarella, Parmesan, and the reserved chopped walnuts.
    Step 6: Bake the Lasagna
27. Cover the baking dish loosely with foil.
28. Bake for 25–30 minutes.
29. Remove the foil and bake for another 15–20 minutes, until the cheese is golden and bubbling and the sweet potatoes are fork-tender.
30. If needed, broil for 1–2 minutes for a more golden top, watching carefully.
31. Let the lasagna rest for 10–15 minutes before slicing so the layers hold together.
    Step 7: Add the Cranberry Honey Sauce
32. Drizzle a little cranberry honey sauce over each serving just before serving.
33. Garnish with fresh thyme or parsley.
34. Serve the remaining sauce on the side so everyone can add more to taste.
    Serving suggestion: Pair with a fresh green salad, roasted Brussels sprouts, or steamed green beans for a complete vegetarian meal.
    Nutrition Information
    Approximate values per serving, based on 6 servings and including the cranberry honey sauce.

• Calories: 480
• Protein: 19 g
• Carbohydrates: 47 g
• Fat: 25 g
• Saturated Fat: 9 g
• Fiber: 7 g
• Sugar: 19 g
• Sodium: 510 mg
  Nutrition values vary with the size of the sweet potatoes, cheese brands, and amount of sauce used.
  Nut Information and Allergens
• Tree nuts: Yes — walnuts.
• Peanuts: No peanuts are intentionally included in this recipe.
• Dairy: Yes — ricotta, mozzarella, and Parmesan cheese.
• Eggs: Yes — one egg in the ricotta filling.
• Gluten: No gluten-containing ingredients are listed; check packaged ingredients for possible cross-contact.
• Soy: No soy ingredients are intentionally included; verify product labels.
• Nut-free alternative: Omit the walnuts or replace them with toasted pumpkin seeds or sunflower seeds, provided these are safe for the person eating the dish. The texture and flavor will change.
• Lower-sugar option: Reduce the honey to 1–2 tablespoons and serve the cranberry sauce sparingly.
• Gluten-free option: The recipe is naturally gluten-free when all packaged ingredients are verified gluten-free.
  Allergy note: Walnuts are a tree-nut allergen. If cooking for someone with a nut allergy, check all ingredient labels and prevent cross-contact with utensils, cookware, and surfaces.
  Q&A
  Q1: Can I make sweet potato lasagna ahead of time?

Yes. Assemble the lasagna up to 24 hours in advance, cover, and refrigerate. Bake until the center is hot and the sweet potatoes are tender. You may need additional baking time if it goes into the oven cold.

Q2: Do I need to peel the sweet potatoes?

Peeling is recommended for softer, more uniform layers, but you can leave the skins on if they are thoroughly washed and you prefer a more rustic texture.

Q3: How do I stop the lasagna from becoming watery?

Cook the spinach until wilted and squeeze out excess liquid. Also, avoid adding too much moisture to the ricotta filling and let the lasagna rest before slicing.

Q4: Can I use frozen spinach?

Yes. Thaw it completely and squeeze out as much water as possible before mixing it with the ricotta.

Q5: Can I replace ricotta cheese?

Yes. Cottage cheese blended until smooth works well. You can also use a thick, well-drained cottage cheese for a slightly different texture.

Q6: Can I make this recipe without walnuts?

Yes. Leave them out or use pumpkin or sunflower seeds if appropriate for your dietary needs. The lasagna will still be delicious.

Q7: Can I use dried cranberries instead of fresh cranberries?

Yes. Use about ¾ cup dried cranberries and increase the water to approximately ½ cup. Simmer until softened, adjusting the honey to taste because dried cranberries may already contain added sugar.

Q8: How should I store leftovers?

Store cooled leftovers in an airtight container in the refrigerator for 3–4 days.

Q9: Can I freeze sweet potato lasagna?

Yes. Freeze individual portions in airtight, freezer-safe containers for up to 2 months for best quality. Thaw overnight in the refrigerator and reheat until hot throughout.

Q10: Is this recipe vegetarian?

Yes, provided you use vegetarian-friendly Parmesan cheese and other cheeses made without animal-derived rennet.

Q11: Can I make it vegan?

Yes, with plant-based ricotta and mozzarella, a suitable egg replacement, and a vegan Parmesan alternative. Replace honey with maple syrup. The texture will differ from the original recipe.

Q12: When should I add the cranberry honey sauce?

Add it after baking, just before serving. This keeps the sauce bright and tangy while allowing the sweet potato, spinach, ricotta, and toasted walnuts to remain the main flavors.