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1
Melt 3 tablespoons butter with oil in large pot over medium heat.
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2
Add onion; saute until soft, about 5 minutes.
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3
Add parsnips, potatoes, and turnips; stir 4 minutes.
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4
Add garlic; stir 1 minute.
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5
Add broth; bring to boil.
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6
Cover; reduce heat to medium-low.
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7
Simmer until vegetables are tender, about 15 minutes.
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8
Using slotted spoon, transfer vegetables to large bowl.
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9
Pour cooking broth into small bowl; reserve.
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10
Add cream cheese to vegetables.
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11
Using electric mixer, beat vegetables to smooth puree.
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12
Add 2 tablespoons butter-oil mixture from top of broth to vegetables.
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13
Stir in 2 tablespoons dill.
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14
Season with salt and pepper.
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15
Butter 11x7x2-inch glass baking dish.
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16
Transfer puree to prepared dish.
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17
(DO AHEAD Can be made 1 day ahead.
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18
Cover and chill.
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19
).
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20
Melt 3 tablespoons butter in small skillet over medium heat.
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21
Add panko and stir until golden brown, about 2 minutes.
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22
(DO AHEAD Can be made 1 day ahead.
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23
Cool and store airtight at room temperature.
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24
).
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25
Position rack in top third of oven; preheat to 350F Sprinkle panko mixture over vegetable puree.
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26
Bake until top is brown, about 15 minutes (25 minutes if chilled).
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27
Sprinkle with 2 tablespoons dill.