This oven baked Amish-inspired beef and zucchini casserole is the kind of simple summer dinner that earns a permanent place in the weekly rotation. It leans on a practical, home-cook approach: a handful of everyday ingredients, a single baking dish, and the natural juices from beef, tomatoes, and zucchini creating a savory sauce as everything bakes together. The combination of ground beef, canned diced tomatoes with green chilies, zucchini, onion, and cheese makes a hearty casserole that feels comforting without being too heavy.
Serve this casserole with buttered egg noodles, steamed rice, or thick slices of crusty bread to catch the flavorful tomato juices. For a lighter plate, add a crisp green salad, sliced cucumbers, or simple green beans on the side. If you want to round it out for a potluck-style meal, baked potatoes or sweet corn are especially good alongside the mild heat from the tomatoes and chilies.
Oven Baked 5-Ingredient Amish Beef and Zucchini Casserole
Servings: 6
Ingredients
1 1/2 pounds ground beef
2 medium zucchini, sliced into 1/4-inch rounds
1 small yellow onion, thinly sliced
1 can (10 ounces) diced tomatoes with green chilies, undrained
2 cups shredded cheddar cheese
1 teaspoon kosher salt
1/2 teaspoon black pepper
Directions
1. Preheat the oven to 375°F and lightly grease a 9-by-13-inch casserole dish.
2. Spread the raw ground beef evenly in the bottom of the prepared casserole dish. Season it with the salt and black pepper.
3. Scatter the sliced onion and zucchini evenly over the beef.
4. Pour the diced tomatoes with green chilies, including all the juices, over the top. Cover the dish tightly with foil and bake for 45 minutes.
5. Remove the foil, carefully stir the mixture to break up the beef, then sprinkle the shredded cheddar cheese over the top. Return the dish to the oven uncovered and bake for 10 to 15 minutes more, until the beef is fully cooked, the zucchini is tender, and the cheese is melted and bubbly.
6. Let the casserole rest for 5 to 10 minutes before serving so the juices settle slightly and the portions lift out more neatly.
Variations & Tips
Make it milder: If you want the casserole more family-friendly for sensitive palates, swap the diced tomatoes with green chilies for plain canned diced tomatoes and add a pinch of dried oregano or basil for extra flavor.
Drain if needed: Zucchini can release quite a bit of liquid. If your squash is especially large or watery, sprinkle the slices lightly with salt and let them sit for 15 minutes, then pat dry before layering them into the dish.
Change the cheese: Monterey Jack, Colby, or a cheddar-Jack blend all work well here. If you like a more pronounced finish, a little Parmesan added over the top in the last few minutes gives the casserole a deeper savory note.
Prep-ahead tip: You can assemble the casserole several hours in advance, cover it, and refrigerate it until baking time. If it goes into the oven cold from the refrigerator, add about 10 extra minutes to the covered baking time.
Add more garden vegetables: Yellow squash, thinly sliced bell peppers, or a small handful of corn can be added with the zucchini for a fuller summer casserole, as long as the dish is not overcrowded.