Make-Ahead Creamy Saffron, Leek & Parsnip Gratin

Prep Time: 20 minutes
Total Time: 1 hour
Makes: 12

Ingredients

  1. 3 lb (1.5 kg) parsnips, peeled, sliced into (1/2-in/1-cm) rounds
  2. ¼ cup (60 mL) butter, divided
  3. 3 leeks, white and light green parts only, thinly sliced
  4. 3 cloves garlic, thinly sliced
  5. 1 tbsp (15 mL) finely chopped fresh thyme
  6. ¾ tsp (4 mL) salt
  7. ½ tsp (2 mL) pepper
  8. 2 tbsp (30 mL) all-purpose flour
  9. 2 cups (500 mL) milk
  10. pinch of saffron threads
  11. ½ cup (125 mL) regular or panko breadcrumbs
  12. ¼ cup (60 mL) grated Parmesan cheese
  13. 1 tbsp (15 mL) finely chopped fresh chives

Method

  1. Add parsnips to large saucepan of boiling salted water. Cook 5 to 6 min until fork-tender. Drain well.
  2. Meanwhile, grease 13 X 9-in. (3-L) baking dish. Set aside. In large high-sided skillet or saucepan over medium heat, melt 3 tbsp (45 mL) butter. Add leeks, garlic, thyme, salt and pepper; cook 5 min. until leeks are softened. Stir in flour; cook 2 to 3 min. Gradually whisk in milk and saffron until sauce is smooth. Continue whisking sauce while bringing to a boil. Stir in parsnips. Reduce heat to medium-low. Cook 6 to 7 min. until sauce is thickened.
  3. Scrape into baking dish. (Make-Ahead: Cool parsnip mixture in baking dish; cover; keep chilled up to 1 day before proceeding with recipe.) Preheat oven to 375°F (190°C). Cover baking dish with foil, bake about 20 min., or until heated through.
  4. Mix breadcrumbs, cheese and chives (Make-Ahead: Mix breadcrumb mixture 1 day ahead; cover, keep chilled until ready to use). Sprinkle on baked parsnip mixture; dot with remaining 1 tbsp (15 mL) butter. Broil 2 min. until topping is golden brown and crisp. Let stand 10 min. before serving.
Tip:
Homemade breadcrumbs can be made by pulsing day-old bread in a food processor until the texture of coarse meal. Freeze up to 1 month in a re-sealable plastic bag.