1. Peel and grate the potatoes. Place in a bowl of cold water and set aside.

2. In a separate bowl, combine the onion, flour, salt, and pepper.

3. Drain the potatoes and add to the onion mixture. Stir to combine.

4. Heat the butter and oil in a large skillet over medium-high heat.

5. Scoop out 1/4 cup of the potato mixture and form into a round patty. Place in the hot oil and repeat with the remaining mixture until the skillet is full.

6. Cook for 4-5 minutes on each side, or until golden and crispy.

7. Serve with your favorite condiments.