For the Vegetables:
2 tablespoonsOlive oil
3 clovesGarlic, finely chopped
1 mediumOnion, finely chopped
1 mediumCarrot, diced
1 mediumZucchini, diced
1 mediumRed bell pepper, diced
2 cupsSpinach, chopped
as neededSalt
½ teaspoonBlack pepper
For the White Sauce (Béchamel):
3 tablespoonsButter
3 tablespoonsAll-purpose flour
3 cupsFull-fat milk
⅛ teaspoonNutmeg
as neededSalt
½ teaspoonBlack pepper
For the Ricotta Layer:
1½ cupsRicotta cheese
½ cupParmesan cheese, grated
1Egg
½ teaspoonDried oregano
a pinchSalt
a pinchBlack pepper
For Assembly:
12Lasagna sheets (pre-cooked or oven-ready)
1½ cupsMozzarella cheese, grated
¼ cupParmesan cheese, grated