Why you’ll love this recipe

  • Ricotta creates a creamy tomato sauce.
  • Frozen spinach keeps the chopping minimal.

Ingredient notes

  • Thawed spinach must be squeezed firmly to remove water.
  • Marinara salt levels vary, so taste before adding salt.

Equipment you’ll need

  • Pasta pot
  • 9-by-13-inch baking dish
  • Mixing bowl

Helpful cooking tips

  • Spread cheese to the edges for an even top.
  • Keep the reserved pasta water nearby while mixing.

Make it your own

Variations

  • Add sliced sautéed mushrooms to the filling.

Substitutions

  • Use small pasta shells instead of penne.

What to serve with it

  • Serve with roasted zucchini or a leafy salad.

Storage, freezing & reheating

In the refrigerator

Divide leftovers into shallow containers and refrigerate within 2 hours (within 1 hour if above 90°F / 32°C). Keep at 40°F / 4°C or colder and use within 3–4 days.

In the freezer

Freeze cooled portions in sealed freezer containers for up to 2 months for best quality. Thaw overnight in the refrigerator.

To reheat

Reheat a single portion in the microwave, loosely covered, stirring or turning halfway through. Heat to 165°F / 74°C throughout; add a spoonful of water if needed.

Frequently asked questions

Can I use fresh spinach?

Wilt about 10 oz fresh spinach in a pan, cool, squeeze dry, and chop before adding.