Sausage and Kale Lasagna Casserole

Prep: 20 minCook: 1 hr 5 min8 servingsmediumItalian-American
Sausage and Kale Lasagna Casserole

A no-noodle lasagna built on layers of gently wilted kale, Italian sausage tomato sauce, and melted mozzarella and Parmesan. The sausage brings savory, fennel-spiced depth while tender kale provides earthiness and structure. Serve warm for casual weeknight dinners or crowd-friendly potlucks. This version skips pasta sheets for a lighter, vegetable-forward take that still delivers rich, cheesy comfort.

Ingredients

8 servings
  • 2 medium bunches kale, stems trimmed, cut into ribbons
    spinach or chard1:1substitution

    cooks faster, milder flavor

    Full guide →
  • 1 tsp salt, for boiling water
  • 2 tsp olive oil, plus more for spraying
  • 19 ½ oz hot Italian sausage, turkey or pork, casings removed
    mild Italian sausage1:1dietary

    reduces heat level

  • 3 cups pasta sauce, store-bought or homemade
    crushed tomatoes with tomato paste3 cups tomatoes plus 2-3 T pastesubstitution

    homemade control, less sugar typically

  • 1 tsp dried basil
  • 1 tsp ground fennel
  • 4 T Parmesan cheese, finely grated
  • 2 cups mozzarella cheese, grated
    ricottaequal volumesubstitution

    creamier texture, tangier taste

    Full guide →

Instructions

  1. 1

    Preheat oven to 375°F. Spray a 9 by 12 inch casserole dish with oil or non-stick spray.

  2. 2

    Heat oil in a large heavy frying pan over medium-high heat. Remove sausage from casings and cook, breaking apart, until browned and cooked through.

  3. 3

    Add pasta sauce, basil, and fennel. Stir and simmer 20-25 minutes until thickened and liquid reduces.

  4. 4

    Meanwhile, salt a large pot of water and bring to a boil.

  5. 5

    Trim kale stems and cut leaves into 1/2 inch ribbons.

  6. 6

    Add kale to boiling water, lower heat to gentle boil, and cook 4-6 minutes until barely wilting. Check after a few minutes to avoid overcooking.

  7. 7

    Drain kale in a colander. Use a salad spinner to remove excess moisture.

  8. 8

    Layer half the kale in the casserole dish, followed by half the sauce, 2 tablespoons Parmesan, and 1 cup mozzarella.

  9. 9

    Repeat with remaining kale, sauce, Parmesan, and mozzarella.

  10. 10

    Cover with foil and bake 20 minutes. Remove foil and bake 20-25 minutes until bubbling and cheese browns.

  11. 11

    Let sit 5 minutes before serving hot.

Tips

Tip 1

Kale releases moisture as it cooks; use a salad spinner or squeeze gently in a clean towel to prevent a watery casserole.

Tip 2

Fennel adds subtle licorice notes that complement sausage; omit or reduce if you prefer a traditional basil-only sauce.

Good to Know

Storage

Cover and refrigerate up to 4 days. Freeze in airtight container up to 3 months.

Make Ahead

Assemble completely, cover, and refrigerate overnight. Bake from cold, adding 10-15 minutes to baking time.

Serve With

Spoon directly from the casserole dish. Pairs with garlic bread, a simple green salad, or roasted vegetables.

See pairing guide →

Common Mistakes

Watch

Overcook kale before layering to avoid mushy, waterlogged casserole; check after 4 minutes.

Watch

Skip spinning or squeezing kale dry to prevent excess liquid that makes layers soggy.

Watch

Use full-fat cheeses; low-fat mozzarella won't brown evenly or develop desired texture.

Substitutions

hot Italian sausage
mild Italian sausage1:1dietary

reduces heat level

kale
spinach or chard1:1substitution

cooks faster, milder flavor

Full guide →
mozzarella
ricottaequal volumesubstitution

creamier texture, tangier taste

Full guide →
pasta sauce
crushed tomatoes with tomato paste3 cups tomatoes plus 2-3 T pastesubstitution

homemade control, less sugar typically

Find more substitutions →

FAQ

Can I make this ahead?

Yes. Assemble fully, cover with foil, and refrigerate up to 24 hours. Bake from cold, adding 10-15 minutes to the total baking time. Freezing also works; thaw overnight in the fridge before reheating.

What if my kale is very tough?

Extend boiling time to 6-8 minutes, checking frequently so it doesn't turn to mush. Some kale varieties (like Lacinato) are naturally more tender than others; younger bunches cook faster.

Can I freeze this after baking?

Yes. Cool completely, wrap tightly in foil and a freezer bag, and freeze up to 3 months. Reheat covered in a 160C oven for 25-30 minutes, or microwave individual portions in 2-3 minute intervals.