This oven baked Amish-style beef and spinach bake is the kind of easy comfort food that saves dinner on a busy weeknight. With just a handful of simple pantry and freezer staples, you can layer everything into one baking dish and let the oven do the work. The creamy spinach soup keeps the beef moist as it bakes, and the result is a cozy, hearty casserole-style meal that feels old-fashioned and practical in the best way.
Serve this beef and spinach bake with buttered egg noodles, mashed potatoes, or fluffy white rice to soak up the creamy sauce. A side of green beans, glazed carrots, or a simple crisp salad rounds it out nicely, and warm dinner rolls make it feel especially homey for a family meal.
Oven Baked 4-Ingredient Amish Beef and Spinach Bake
Servings: 6
Ingredients
1 1/2 pounds beef sirloin strips
1 can (10.5 ounces) cream of spinach soup
1 packet onion soup mix
1 1/2 cups shredded mozzarella cheese
Directions
1. Preheat your oven to 350°F and lightly grease a 9x13-inch baking dish.
2. Spread the raw beef sirloin strips evenly in the prepared baking dish.
3. Pour the cream of spinach soup over the beef, then sprinkle the onion soup mix evenly across the top.
4. Top with the shredded mozzarella cheese, covering the surface as evenly as possible.
5. Cover the dish tightly with foil and bake for 35 minutes. Remove the foil and bake 10 to 15 minutes more, until the beef is cooked through and the cheese is melted and lightly golden.
6. Let the bake rest for 5 minutes before serving so the sauce can settle slightly.
Variations & Tips
Add mushrooms: Scatter 8 ounces of sliced mushrooms over the beef before adding the soup if you want a deeper savory flavor and a little extra bulk in the casserole.
Try a different cheese: Mozzarella gives this bake a mild, stretchy topping, but provolone, Monterey Jack, or a cheddar-mozzarella blend also work well if that is what you have in the fridge.
Serve over starches: If you want to stretch the meal for bigger appetites, spoon the finished beef bake over rice, mashed potatoes, or egg noodles. This is especially helpful when you are feeding hungry kids or hoping for leftovers the next day.
Slice beef evenly: For the most tender result, keep the sirloin strips fairly uniform in thickness so they cook at the same rate. If your strips are especially thick, you may need a few extra minutes in the oven.
Make-ahead tip: You can assemble the dish a few hours in advance, cover it, and refrigerate until dinnertime. When baking straight from the fridge, add about 5 to 10 extra minutes to the covered baking time.