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Combine the cream cheese and sugar in a large mixing bowl and beat with an electric mixer until smooth.
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Beat in the sour cream, vanilla, and salt to combine. Add the eggs 1 at a time and beat on low speed until just combined, then mix in the melted white chocolate.
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Scrape down the sides and bottom of the bowl and beat about 30 seconds more to ensure everything is mixed well.
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Pour about half of the filling into the crust. Dollop half of the rhubarb over that, then use a butter knife to swirl the two together a bit, taking care to avoid the crust.
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Repeat the process with the remaining filling and the remaining rhubarb.
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Pour into the crust and bake for 55 to 65 minutes, until the center barely jiggles when you tap the pan.
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Cool on a wire rack for 10 minutes, then run a knife around the edge of the pan to loosen the cake. Cool to room temperature, then cover loosely with plastic wrap and refrigerate overnight.
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Once the cheesecake has chilled overnight, slice and serve.
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Uneaten cheesecake can be stored in the fridge, covered, for 3 or 4 days or in the freezer, tightly wrapped, for about 2 months.