Nutrition Snapshot
- The lentils and whole wheat noodles make this a high fiber dinner that fits a gut friendly eating pattern.
- Lentils, ricotta, and mozzarella each add protein, which suits anyone cooking a meatless dinner that has to satisfy.
- Jarred sauce and cheese make it high in sodium, so use the low sodium swap in the notes.
One batch of this lasagna fills two eight inch square pans. Bake one for dinner tonight and slide the other into the freezer unbaked, where it holds for three months. A bag of dry brown lentils replaces the ground beef and costs a fraction of what the meat would. Thirty minutes of hands on work gets you two dinners.
Resistant Starch From Lentils Feeds the Bacteria in Your Colon
Your small intestine breaks most starch down into glucose and absorbs it. Some of the starch in lentils and whole wheat noodles resists that, passes through intact, and reaches the colon. Bacteria there ferment it, and the fermentation produces short chain fatty acids. One of them, butyrate, is the main fuel the cells lining your colon burn.
Adults who added 22 grams of resistant starch a day for four weeks had more butyrate in the stool (McOrist AL, Journal of Nutrition, 2011, PMID 21430242). Butyrate rose most in people who started low, and it fell in some who started high. That amount came from a supplement scale intake, so lentils a few times a week matter more than one large serving.
Reheated Pasta Gives a Smaller Blood Sugar Rise
Cooked starch that cools reorganizes into a form your digestive enzymes reach less easily. That is what resistant starch means, and it is why leftover pasta behaves differently from pasta straight out of the pot. People who ate the same pasta meal reheated had a lower blood glucose rise than when they ate it hot (Hodges C, Foods, 2019, PMID 31881647).
A lasagna you refrigerate or freeze and then reheat goes through a version of that cycle. Baking a frozen pan applies long moist heat, which reverses part of the change. The gain is minor, and refrigerated leftovers of either pan get the same effect.
What’s in a Serving
Most of the protein in a serving comes from three places: the lentils, the part skim ricotta, and the mozzarella. A serving holds a little under half a cup of cooked lentils, which supply protein and fiber in the same food. The whole wheat noodles add more fiber, and the spinach adds folate and potassium.
Most of the sodium comes from the jarred marinara and the cheese. A cup of most jarred sauces contains a large share of a day’s sodium, and mozzarella and parmesan add more. The low sodium version in the card notes cuts most of it. The card below shows the calculated figures for one serving.
What to Buy
Brown Lentils
Buy organic brown lentils and organic whole wheat lasagna noodles (to avoid glyphosate). Lentils and wheat are both often sprayed to dry the field before harvest, and organic growing does not allow that spray. Brown lentils hold their shape through a simmer and a bake. Red lentils fall apart into a puree, so buy brown for this.
Whole Wheat Lasagna Noodles
Whole wheat noodles have more fiber than white ones. They also stay firmer after freezing. Boil them one minute short of the package time, since they finish cooking in the sauce. No boil noodles work too. Pour an extra half cup of water around the edges of each pan if you use them.
Part Skim Ricotta
Part skim ricotta gives you the same creamy layer as whole milk ricotta with less saturated fat. Whisk the egg into it before spreading, which keeps the layer from running out when you cut the lasagna. Cottage cheese blended smooth works in place of the ricotta and raises the protein.
Jarred Marinara
Read the label for two things: added sugar and sodium. Many jarred sauces list sugar in the first five ingredients, and some contain twice the sodium of others on the same shelf. A jar listing tomatoes, olive oil, garlic, and herbs is what this recipe is built on.
Who This Fits and Who Goes Easy
This lasagna suits anyone building more fiber into their meals. It also gives a meatless dinner enough protein to keep you full through the evening. If lentils are new to you, start with one portion and see how you feel. Gas and bloating are common in the first week of a fiber increase, and they settle as the mix of bacteria in your colon shifts.
Anyone on a sodium restriction should use the low sodium version, which swaps the jarred sauce for crushed tomatoes and cuts the added salt. People with kidney disease on a potassium restriction should check with their dietitian first, since tomatoes, spinach, and lentils are all high in potassium.
How to Make It Your Own
Sliced mushrooms browned with the onion add depth to the sauce. Fresh baby spinach works in place of frozen, wilted in the skillet first and squeezed dry. A quarter teaspoon of red pepper flakes gives the finished dish some heat.
The swaps that change the nutrition:
- Low sodium: swap the jarred sauce for two 28 ounce cans of no salt added crushed tomatoes, and leave out the parmesan.
- Lower sugar: choose a jarred sauce with no added sugar, or use the crushed tomato version above.
- Dairy free: blend 15 ounces of drained firm tofu with lemon juice, olive oil, and salt in place of the ricotta, and skip the cheeses.
- Gluten free: brown rice or lentil lasagna noodles work, and they need the full package boiling time.
- Higher protein: blend a 16 ounce tub of low fat cottage cheese in place of the ricotta.
- Nut free: the recipe is nut free as written.
Freeze One Pan, Bake the Other
Assemble both pans, then cover the second one with plastic wrap pressed onto the surface and a layer of foil over that. It holds three months in the freezer. Label it with the date and the oven instructions, since the baking time from frozen differs from the fresh pan.
Bake the frozen pan straight from the freezer at 375 degrees, covered, for 75 minutes, then uncovered for 15 more. Thawed overnight in the refrigerator, it takes 45 minutes covered and 15 uncovered. Let either pan rest 15 minutes before cutting so the layers hold. Single portions reheat in the microwave in about four minutes.
Freezer Lentil and Spinach Lasagna
Equipment
- large pot
- Saucepan
- Large skillet
- Colander
- 8 x 8 Inch Baking Pan
Ingredients
For the lentil sauce
- 1 tablespoon olive oil
- 1 onion yellow, chopped
- 3 cloves garlic minced
- 1 1/2 cups lentils brown, dry, organic
- 48 ounces marinara sauce jarred, no added sugar, from two 24 ounce jars
- 2 teaspoons Italian seasoning dried
- 1/2 teaspoon black pepper ground
For the ricotta layer
- 15 ounces ricotta cheese part skim
- 1 egg large
- 10 ounces spinach frozen, chopped, thawed and squeezed dry
- 1/2 cup parmesan cheese grated
To assemble
- 16 lasagna noodles whole wheat, organic
- 8 ounces mozzarella cheese part skim, shredded
Instructions
- Rinse the lentils under cold water.
- Bring 4 1/2 cups of water to a boil in a saucepan.
- Add the lentils and simmer, uncovered, for 20 minutes until tender.
- Drain the lentils in a colander.
- Bring a large pot of water to a boil.
- Boil the lasagna noodles for one minute less than the package time.
- Drain the noodles and lay them flat on a sheet of foil.
- Heat the olive oil in a large skillet over medium heat.
- Cook the onion for 5 minutes until soft.
- Add the garlic and cook for 30 seconds.
- Stir in the drained lentils, the marinara, the Italian seasoning, and the black pepper.
- Simmer the sauce for 5 minutes.
- Whisk the egg into the ricotta in a bowl.
- Stir the spinach and the parmesan into the ricotta.
- Heat the oven to 375 degrees.
- Spread 1/2 cup of the lentil sauce over the bottom of each baking pan.
- Lay 4 noodles over the sauce in each pan, trimming them to fit.
- Spread half of the ricotta over the noodles in each pan.
- Spoon a third of the remaining sauce over the ricotta in each pan.
- Lay the last 4 noodles over the sauce in each pan.
- Spoon the rest of the sauce over the noodles in each pan.
- Sprinkle half of the mozzarella over each pan.
- Cover one pan with foil and bake it for 30 minutes.
- Uncover that pan and bake it for 15 minutes more.
- Rest the baked lasagna for 15 minutes before cutting.
- Wrap the second pan in plastic wrap and foil and freeze it unbaked.
Notes
Nutrition
Brown Lentils Turn a Freezer Lasagna Into a High Fiber Dinner
A lasagna built on brown lentils and whole wheat noodles delivers protein and fiber in the same layer. The resistant starch in the lentils is what colon bacteria ferment into butyrate. Jarred sauce and cheese make this a high sodium dish, and the crushed tomato version in the notes cuts most of that. One of the eight servings is the portion this is built around.
Serve It With
A crisp vegetable side adds crunch against the soft layers, and Easy Cilantro Lime Coleslaw for a Low-Sodium, Heart-Healthy Side keeps the sodium low. Crispy Roasted Chickpeas with Smoked Paprika and Garlic makes a second high fiber dish for the table. For more on the fiber that reaches your colon, see Fiber 101: Gut Health, Weight Management, Cholesterol, and More.

Scan Me!

Recent Comments