Spinach Casserole

Ingredients

• 1 lb (.5 kg). ground beef
• 1 onion, chopped
• 1 tsp (5 ml). oregano
• 1 tsp (5 ml). garlic salt, or to taste
• 1 10-1/2 oz (294 grm). can cream of mushroom soup
• 2 10 oz (280 grm). packages frozen spinach, thawed and well-drained
• 1/2 cup (125 ml) sour cream
• 1/2 cup (125 ml) cooked rice
• 3 oz (84 grm). cream cheese, optional
• 12 oz (336 grm). Monterey Jack cheese
• 1 8-count package refrigerated crescent rolls