Insert XML data into a SQL table declared

See more:

XML

SQL

stored-procedure

Hello,
Can someone explain to me how to execute a stored procedure that yields output that is XML and then take that XML output and insert it into the table I've declared?

e.g.

DECLARE @cache TABLE (
val1 varchar(max)
val2 varchar(max)
val3 varchar(max)
)
INSERT @cache EXECUTE usp_Yoursp @Id=123
SELECT * FROM @cache

The SP "usp_Yoursp" yields some XML that I am trying to insert into @cache, but it fails because "Column name or number of supplied values does not match table definition". This is because I am trying to directly insert some XML into a table. How can I properly go about doing this?