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1
Combine lentils, water, and 1/2 teaspoon salt in a medium saucepan and bring to a boil.
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2
Reduce heat and simmer 1520 minutes, until lentils are tender but hold their shape.
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3
Drain, rinse in cold water, and set aside.
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4
Preheat broiler and move rack 8 to 12 inches from heat.
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5
Rub outside of peppers in a thin coat of olive oil and place on their sides on a rimmed baking sheet.
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6
Broil about 13 minutes, until blackened on one side.
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7
Turn peppers 90 degrees and broil another 5 minutes.
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8
Repeat one or two more times, until peppers are blackened all over and very soft.
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9
Transfer to a glass mixing bowl and cover with plastic wrap, a dish towel, and a dinner plate, to seal in heat.
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10
After 15 minutes, peel, stem, and seed the pepper by hand.
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11
Do not run under water (it eliminates the smoky flavor).
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12
Chop into 1/4-inch pieces and set aside.
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13
Preheat oven to 425 degrees F and move rack to middle.
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14
Generously oil exposed flesh of squash halves and sprinkle liberally with salt and pepper.
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15
Place face down on a rimmed baking sheet and add a tablespoon of water.
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16
Roast squash 2530 minutes, or until tender when squeezed with tongs, but not collapsing, and browned on cut flesh.
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17
Remove from oven and turn squash face up.
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18
When slightly cooled, transfer to a baking dish with sides high enough to hold the squash upright.
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19
Use a fork to gently loosen most of the strands of squash, without disturbing the browned edges.
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20
Turn oven down to 375 degrees F.
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21
Heat milk gradually in a small saucepan until it just simmers.
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22
Turn off heat.
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23
Clean saucepan used to cook lentils.
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24
In it, melt 2 tablespoons butter over medium heat, then add shallot and garlic and cook until softened but not browned, 35 minutes.
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25
Add flour and stir with a wooden spoon about 4 minutes, turning down the heat if the mixture bubbles vigorously, starts to brown, or sticks to the pan.
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26
Switch to a whisk, and carefully pour milk into the flour mixture while whisking, mixing well.
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27
Increase heat to medium high and bring to a simmer while whisking.
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28
Then, switch back to the wooden spoon and simmer gently for about 5 minutes, until sauce has thickened slightly.
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29
Turn off heat and whisk in cheese, half at a time, until melted.
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30
Season sauce to taste with salt and pepper.
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31
In a mixing bowl, combine lentils and half the cheese sauce.
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32
Keep adding cheese sauce until desired ratio is reached.
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33
Fold in red peppers, being gentle to avoid turning the mixture orange from the pepper liquid.
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34
Spoon lentils and cheese into the prepared squash, piling it as high as it will safely go.
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35
Melt remaining 1 1/2 tablespoons butter and combine in a small bowl with the breadcrumbs, parsley, and a pinch of salt and pepper.
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36
Top each squash with a fourth of the mixture, pressing it down to help it adhere.
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37
Bake at 375 degrees F for about 25 minutes, until breadcrumbs are golden brown.
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38
Serve warm.