The last Sunday before Advent is often entitled (The Feast of ) Christ the King, and celebrates the authority of Christ as King and Lord.
It is also more familiarly known in Anglican churches as Stir-Up Sunday, when it was traditional to ‘stir up’ and make the Christmas Puddings. The actual term stir-up Sunday comes from the opening words of the Collect for the Day in the Book of Common Prayer:
Stir up, we beseech thee, O Lord, the wills of thy faithful people; that they, plenteously bringing forth the fruit of good works, may of thee be plenteously rewarded; through Jesus Christ our Lord. Amen
If you are not sure how to make Christmas pudding, here is a link to a recipe – personally I find it quicker and easier to buy one, so no stirring required!