Couscous casserole

4T olive oil, divided, plus more for the baking dish
1med onion, chopped
1T minced garlic
1lb ground beef/pork/lamb/turkey/or chicken
salt and freshly ground black pepper
2med zucchini or summer squash, thinly sliced
1/4c unsalted chicken stock, vege stock, or water
4c pasta sauce
1/2c couscous
freshly grated parmesan cheese

Heat oven to 400 degrees. Oil a 1 1/2 to 2qt gratin dish or any oblong baking pan. (I used a loaf pan, haha) Put 2T oil in skillet over med-high heat. When hot, add onion and garlic; cook about 5 min. Add meat and stir; sprinkle with salt and pepper. Cook until the meat is no longer pink, 8-10 min; set aside. Whle the meat is cooking, put the zucchini slices on a baking sheet, drizzle with the remaining oil, and sprinkle with salt and pepper. Roast in oven until just tender, 5-8min. Remove, set aside, and reduce temp to 350. Put the stock and pasta sauce in a saucepan over medium heat and bring to a gentle bubble. Stir in the couscous, cover, and turn off the heat; let sit for 10min. Spoon a thin layer of couscous mix into the bottom of the prepared pan; top with zucchini and then some of the meat. Repeat until you've used all the ingredients, finishing with couscous. Sprinkle with parmesan cheese if you like. Bake about 25 min. Serve hot. Makes 6 servings.