Quick Beef Stew

Ingredients

• 2 Tbsp. vegetable oil
• 1/2 lb. ground beef
• 2 c. potatoes, sliced thin
• 2 medium onions, sliced
• 1 can tomatoes, undrained and chopped
• 1 tsp. salt
• 1/2 tsp. black pepper
• 1 c. water (more, if needed)