The ingredients in this recipe are simple and putting them together is a piece of cake.

Shortbread cookie crumbs. The shortbread layer is super easy to make by grinding up store-bought shortbread cookies.

I used 1 full package of Keebler Sandies Classic Shortbread cookies, which measured out to about 2 ½ cups of crumbs.

Butter. Butter helps hold the crust together and give even more rich flavor to the shortbread crust.

Sugar. The sugar is important as a binding agent in the crust. As it bakes, it melts, then firms as it cools, and helps hold the crust together.

Caramel bits. Millionaire Bar recipes often call for making homemade caramel sauce, with a mixture of sweetened condensed milk, brown sugar, light corn syrup, butter, heavy cream — and a candy thermometer. No need.

All you need are handy caramel bits. If you can’t find them in the baking aisle, check the candy aisle. You can also order them from Amazon.

Milk. You need just a little bit of milk or almond milk to melt the caramel.

Milk chocolate. I’m usually a die-hard dark chocolate lover, but this time, I had to go with a milk chocolate coating so I could get these as close to a Twix bar as possible.

Shortening. I prefer melting chocolate with shortening because once the chocolate cools, it won’t melt in your hands as quickly as coconut oil does.

Flaky sea salt. All this sweetness needs a little relief. Flaky sea salt adds the perfect saltines and a little crunch.

VARIATIONS

Cookie crust. There are tons of ways you can add your own twist on the crust. You can use graham crackers, Nilla Wafers, chocolate wafers, gingersnaps, pretzels, or even crushed up cereal.

Milk chocolate. You can use dark chocolate, semi-sweet chocolate, or even white chocolate.

Toppings. Add your own toppings like chopped nuts, pretzels, a drizzle of another type of chocolate, or M&Ms.

STEP-BY-STEP INSTRUCTIONS