Beef Tostada Pie

Ingredients

• 1 lb. ground beef ⓘ
• 1 large onion, chopped ⓘ
• 1 clove garlic, finely grated ⓘ
• 1/2 tsp. oregano leaf, crumbled ⓘ
• 1 (16 oz.) can whole tomatoes in puree ⓘ
• 1 (4 oz.) can chopped green chilies (undrained) ⓘ
• 1 large can refried beans
• 2 c. Cheddar cheese, grated ⓘ
• 2 Tbsp. all-purpose flour ⓘ
• 1/2 tsp. cumin, ground ⓘ
• 1/2 tsp. salt ⓘ
• 1/8 tsp. pepper
• Doritos chips ⓘ