1. Heat butter in a large skillet until melted. 2. Add onions, rosemary, salt and pepper. 3. Cook over low heat until onions are soft and browned slightly about 20 minutes. 4. Arrange 1/2 of the potato slices on the bottom of a 10"x 1 1/2" greased pie dish. 5. On top of the potatoes add 1/2 the onion mixture. 6. Repeat steps 4 and 5. 7. Pour half and half over the top. 8. Cover with aluminum foil and bake at 350F for 1 hour. 9. Uncover and cook for 20 minutes longer. 10. Cut into wedges to serve. ---------------------------------------------------------------------------
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