Ground Beef-Spinach Casserole

By JNAMCD

4.0 / 5

10min

30min

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1 pound ground beef
1 medium onion chopped
1 clove garlic minced, or more to taste
1 (10 ounce) can sliced mushrooms drained
1 teaspoon dried oregano
2 dashes hot pepper sauce or more to taste
salt and ground black pepper to taste
2 (10 ounce) packages frozen chopped spinach thawed and drained
1 (10 ounce) can condensed cream of celery soup
1 cup sour cream
1 (8 ounce) package grated mozzarella cheese