We like to make veggie-loaded taco pasta. It's flexible, and easy, and makes a ton of food and is a good leftover.
Ingredients:
1 lb ground meat (beef, turkey, veggie burger crumbles, whatever)
1 lb whole wheat penne pasta
1 onion
minced or pressed garlic
bell peppers, diced
carrots, diced
1 lb greens (spinach, baby kale, chard, whatever)
a few tomatoes, diced
green onions, sliced
1 packet taco seasoning (we like the Rick Bayless Frontera taco sauce stuff)
4 cups chicken broth
1 stick butter
1/2 cup flour
cheese (grated)
Cook the pasta. Reserve a cup of the cooking water before draining. Toss with some oil and set aside.
While the pasta is cooking, make the sauce.
Cook the ground meat in a skillet with the onion, draining the fat off. When it's cooked, throw in the garlic. Cook for another 30 seconds or minute until it smells good, then put the meat mixture into a bowl. Cook the bell pepper, the carrots, and whatever other veggies you have on hand in the skillet. When they're nearly done, toss in the greens and slap a lid on it so that they'll wilt. When the veggies are cooked, put them in the bowl with the meat mixture. In the empty skillet, melt the butter. When it's melted, dump in the flour. Whisk it until it's homogenous. Put in the taco seasoning. Whisk until combined. Whisk in the chicken broth, a little at a time, until it's all whisked in. Add a handful or two of grated cheese (cheddar? mozzarella? Whatever you happen to have on hand is probably fine.) and stir until it's melted in.
Dump the pasta into the sauce. Add the meat mixture and veggies. Mix it all up. Add in the diced tomatoes and sliced green onions, then serve with a little cheese on top.
Makes about 8 servings. I don't know how well it freezes, but it's a great leftover. Before you put the leftovers away, stir in some of the pasta cooking water. The pasta will absorb liquid as it sits in the fridge, so adding some extra liquid will keep the pasta nice and saucy instead of too dry when you re-heat it.