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1
Bring a large pot of water to a boil.
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2
Put the cauliflower and 1 cup water in a small saucepan over medium heat.
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3
Cover, bring to a simmer and cook until the cauliflower is fully softened, about 20 minutes.
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4
Transfer the cooked cauliflower and all the cooking liquid to a food processor and set aside.
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5
Wipe out the saucepan.
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6
Heat the oil in the saucepan over medium heat.
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7
Add the shallot and garlic and cook, stirring, until softened, about 3 minutes.
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8
Stir in the lemon juice, miso, mustard, 1 teaspoon salt, 3/4 teaspoon black pepper, cayenne and turmeric until well combined.
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9
Gradually whisk in the almond milk, nutritional yeast and brown sugar and bring just to a simmer.
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10
Remove from heat.
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11
Process the cauliflower until smooth.
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12
With the food processor running, gradually add the warm almond milk mixture and process until extra creamy.
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13
Transfer the cauliflower-almond milk mixture to a large saucepan over medium heat, add the vegan Cheddar and stir occasionally until it melts.
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14
Meanwhile, add the elbow macaroni to the boiling water and cook according to package directions.
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15
Strain, reserving 1 cup of pasta water.
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16
Add the pasta to the sauce and stir to combine.
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17
Stir in some of the reserved pasta cooking liquid to reach your desired consistency.
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18
Add salt to taste.
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19
Serve hot with hot sauce on the side if using.