2 ½poundszucchinirinsed and sliced to ¼ to ½ inch thick (ends cut off) If slices are large you can halve them.
2tablespoonsbutter
⅓cupdiced onionor 1/2 teaspoon onion powder
½teaspoonkosher salt
½teaspoonblack pepper
½teaspoongarlic powderor one clove of garlic
110.5 ounce can cream of mushroom soup
1cupsour cream
2 to 3cupssharp cheddar cheeseshredded, divided
1large eggbeaten
Topping
½ to 1cupsharp cheddar cheeseshredded
1sleeve ritz crackers crushedor ¾ to 1 cup panko crumbs
3tablespoonsbutter
Get Recipe Ingredients
Instructions
Preheat oven to 350°F. Lightly grease a 9x9-inch baking dish.
Cook zucchini: In a large skillet, melt 2 tablespoons of butter over medium heat. Add the zucchini and diced onion (if using fresh), and sauté for 6–9 minutes, stirring occasionally, until the zucchini is tender, lightly browned and excess water has evaporated. (A little char adds great flavor!)
Sprinkle in the salt, pepper, garlic powder, and onion powder (if using instead of onion) as it cooks. Drain any excess liquid.
Mix filling: In a large bowl, lightly beat egg, and add cream of mushroom soup, sour cream and and 2 cups cheese and stir together.
Then gently fold in the drained and cooked zucchini. Stir gently to mix everything evenly.
Assemble casserole: Spread the zucchini mixture into the prepared baking dish.
Make topping: In a small bowl, mix crushed crackers (or panko) with melted butter until evenly coated.
Add topping: Evenly spread top the casserole with ½ to 1 cup additional cheddar cheese. Then, sprinkle the cracker topping over the casserole.
Bake for 30–35 minutes, or until bubbly and golden on top.
Let it rest for 5–10 minutes before serving to help it set up.
Notes
Storage: Store leftovers covered in the refrigerator for up to 3-4 days. The casserole will release some liquid as it sits, but this doesn't affect the flavor. For best results when reheating, use the oven at 325°F until heated through to restore some of the topping's crispness.