23 Boozy 21st Birthday Cake Ideas

Half dessert and half aperitif, this jello shot cake looks absolutely incredible, and as it contains 3 cups of vodka or rum, it will go down a treat at any 21st birthday party.

Get their 21st birthday celebrations off to a flying start with this totally decadent Drunken Chocolate Truffle Cake, which is infused with delicious Godiva Chocolate Liqueur for a naughty but nice twist.

Just look at how pretty this birthday cake is! With all the fun and flavor of a funfetti cake, gel coloring turns it into a vision in turquoise and pink.

A 21st birthday cake should be luxurious, tasty, and totally sinful, and this drip cake is all three (and then some), as it uses chocolate, ganache, and thick peanut butter…delicious.

They may be 21 but that doesn’t mean they no longer like surprises, and this beautiful cake is covered in pristine white frosting which conceals a colorful rainbow heart.

Carry the cocktail theme through from the bar to the baking with a margarita cake, which is made by adding frozen margarita mix to the batter, and tequila and lime to the frosting.

Possibly one of the most decadent cocktails around, the mudslide combines chocolate with Irish cream, Kahlua, vodka, and milk, and this rich poke cake makes full use of this delicious combination.

Okay, so they might be too old for a normal piñata, but just check out this piñata birthday cake which features colorful cream cheese topping and opens up to reveal a bounty of M&Ms.

Celebrate them reaching adulthood with a cake which looks and tastes super impressive, and encompasses all of their favorite childhood treats – ice cream, brownies, fudge sauce, and delicious funfetti cake batter.

Bring all the flavors and textures of S’mores to the birthday table with this fabulous cake which is surrounded by chocolate bars on a Graham cracker base, and covered in toasted marshmallows.

Who needs booze when you can have beauty instead? This rainbow trifle makes a stunning dessert for any party, and uses rainbow colored cake slices for a delightful visual effect.

It doesn’t matter how old they are, sprinkles will always be fun, and this beautiful cake manages to combine that fun with love in the shape of a perfect heart.

Aside from the fact that this cake tastes absolutely delicious – light, fluffy, and moreish – the visual impact is simply amazing, from the bright green sponge to the wonderful rainbow buttercream.

Some candies are wasted on children, which is why this cake will be perfect for a 21st birthday – hazelnut sponge, Nutella buttercream, and very grown-up Ferrero Rocher chocolates sitting on the top.

The days of character cakes might be long gone, but there is still plenty of opportunity for making their birthday cake; this delectable homemade butter rum cake is the perfect example.

If they can’t choose between mint choc chip and cookies ‘n cream, why not combine both in this fabulous mint frosting layered cake which has cookies added to the dough?

Mix buttermilk pancake batter with yellow cake mix and you will have the ingredients for these totally awesome funfetti birthday pancakes which are perfect for an indulgent birthday breakfast.

You could use any color for this stunning ombre cake, although the purples used in this recipe look absolutely awesome, and add a wonderful twist to a classic birthday cake.

Pay lip service to the legality of drinking without going overboard with this incredible Black Forest cake, which is oozing with sweet and sour cherries and contains just a hint of rum.

Give chocolate cake an upgrade by following this recipe, which uses flavorsome full-bodied bourbon, good quality chocolate, and a decadent ganache that’s just oozing with sweet indulgence.

Forego the fancy frosting and go for rustic with a beautiful rum cake, which is topped off with a very adult reduced sugar rum glaze and then sprinkled with crunchy pecans.

Keep a little bit of childhood in the celebrations with this chaotic but cute cake, which is absolutely covered in all kinds of kid-favorite candies such as sugar lips and ice cream cones.