Spray a baking sheet with olive oil or spread olive oil on the baking sheet and set aside.
Cook 14 lasagna noodles al dente according to package instructions (you'll need just 12 noodles, but I recommend cooking an extra 2 noodles in case some tear or fall apart) remove from the water and place on the oiled baking sheet. Set aside until ready to assemble the lasagna.
Make the Ricotta Cheese Layer
Mix all the ingredients under the ricotta cheese layer except the mozzarella cheese together. Set aside until ready to assemble the lasagna.
Prep the Veggies and Meat Sauce
Heat a large saucepan over medium heat. Add the olive oil and salt and cook the ground beef until there is no pink left.
Add the onions, eggplant and zucchini and saute with the ground beef for 5 minutes.
Add the crushed tomatoes and rinse the sides of the can with water and add to the pan (about ½ cup - 1 cup water). Add the garlic and simmer for 5-10 minutes or until it thickens into a sauce.
Assemble the Lasagna
Start with a thin layer of the veggie and meat sauce in a 13x9 inch baking dish that is around 3 inches in depth. Next place 4 lasagna noodles on top, slightly overlapping. Top noodles with cheese layer. Cover cheese layer with meat and veggie sauce and repeat (noodles, cheese, meat and veggies) 2 more times so you have a total of 3 layers.
Cover the top of the lasagna (last layer of meat and vegetable sauce) with the mozzarella cheese.
Cover with foil and bake for 30-35minutes. Remove foil and allow it to bake an additional 10minutes or until the top is bubbly and golden.
Remove from the oven and allow the lasagna to sit for 15 minutes before serving.
Notes
You'll need 12 lasagna noodles. I recommend cooking an extra 2 noodles incase some of the noodles tear or fall apart.
For Meal Prep:
Refrigerator: pep the lasagna following the instructions and instead of baking, cover it and refrigerate it until ready to bake - up to 2 days after prepping it.
Freezer: If you need to store it for longer than a few days, wrap it tightly and freeze it. Just know baking the lasagna from frozen will require more time.