Famous Beef Pie | Easier Eats

Ingredients

• 1 cup all-purpose flour
• 1/3 cup old-fashioned oats
• 7 tablespoons butter, cold and cut into tablespoons
• 2 tablespoons cold water, plus more, to taste
• 1 pound ground beef
• 1 medium onion, chopped
• 1 medium green pepper, chopped
• 1 clove garlic, minced
• 1/4 cup ketchup
• 1 teaspoon salt
• 1 teaspoon dried oregano
• 1/2 teaspoon dried basil
• 1/2 teaspoon dried marjoram
• 1/4 teaspoon black pepper
• 1 (10-ounce) package frozen chopped spinach, thawed, squeezed dry
• 3 large eggs, lightly beaten
• 2 cups cheddar cheese, shredded, divided
• 1 large tomato, seeded and diced