Easy to make Lego Cookies and Lego Competition

A plate of red, yellow, green, and blue LEGO brick cookies!

When I say easy, I mean easy

Want a quick activity and treat for a birthday party or to just liven up an afternoon?

Try these easy to organize and easy to make LEGO cookies and LEGO competition!

Who. Doesn’t. Like. LEGOs?

Seriously, young and old alike seem to enjoy playing with these simple stacking blocks. LEGOs are the gift of choice for Christmas at our holiday gatherings. Sure wish I had invented them, don’t you?

Yellow, blue, red, and green frosting near a bowl of M&Ms and a rice crispy treat on a plate.

BYOL- Bring Your Own LEGOS

You will need those LEGOs in a bit, so tell the grands to bring theirs or have a stash of your own available to use. The ones in the picture are LEGO DUPLOs which have a larger sized block. They work wonderfully for younger children. Even the larger grands still like playing with LEGO DUPLOs occasionally (but prefer their smaller blocks).

The grands will get a kick out of helping you with this recipe and then joining in with the LEGO competition.

Pouring marshmallows into a pan on the stove from a measuring cup.

Rice Krispie Treats, Yum

For these cookies I used the original Rice Krispies Treats Recipe found on their website. You can find that recipe by clicking here. This recipe is a three ingredient marvel that has stood the test of time. It is quick, easy and oh, so good.

Melt the butter and add the marshmallows. Stir until combined. I always use the mini-marshmallows because I keep them on hand and they melt so quickly, but the large work as well.

Next, pour in the Rice Krispies. Stir until mixed then scoop out the gooey mess into a greased 9x13 inch pan. I spray my hands with a bit of the non-stick cooking spray and pat the treats down firmly. This makes them more compact so they work better for decorating.

Rice crispy treat mixture being poured into a 9x13 pan.

LEGO sized bars please

Let the cookies cool and set up well before cutting them into bars. These bars were cut to be about 1 ½ inches wide by 3 inches long. You could also make them square or whatever size you want to look like the various LEGO block sizes.

Mix up some frosting.

I used approximately 4 teaspoons of milk to each 1 cup of powdered sugar I used to make a simple frosting with a nice spreading consistency. You will have to experiment a bit and add a bit more milk or a bit more powdered sugar to get that good consistency.

Separate the frosting into four bowls. Add Food Coloring to each one and make red, green, yellow and blue frosting. Stir and add more Food Coloring until you get the deep colors that look like the colors of LEGOs.

Frost the top of the Rice Krispie bars. I tried to get the frosting to have straight edges as much as possible.

Pressing down a rice crispy mixture into a pan.

M&M LEGO studs

Did you know the knobs on LEGOs are called "studs"? Me either, who knew?

For this sized cookie, choose 8 M&Ms in the same color as the frosting you are using. You can use 4, 6, 8 M&Ms as studs depending on the size of your cookie.

I placed a small amount of frosting on top of each M&M and set them in two rows of 4 on top of the frosted bar. The frosting then ran down over the M&M and melded it to the cookie. Looks cool, huh?

This worked fine, but next time I may actually skip that step and just set the M&Ms directly on top of the cookie without using any frosting on top of it. If you do that, just be sure to use the same color M&Ms as the frosting and put the “M” downwards so it doesn’t show.

Adding red frosting to a rice crispy treat rectangle.

Place the Rice Krispie bars on a plate and let them set up a bit.

Note: The LEGO cookies look really cool stacked up. It looks like you were using them to build something.

LEGO competition, here we come

Let's get ready for some competition, a LEGOs competition. So, the point of this competition is for your grand to use their engineering imagination to build the most amazing structure that they can.

I am always impressed with the creative ways the grands can design and then build with LEGOs. They think of things that I would never think of in a million years. Mine always come out square and boring but look at the creation in these pictures! Woo-hoo!

You can create some rules for this competition but keep it simple. How about a small LEGO set as a prize?

And I don’t know who will be the judge, maybe Papa? I never like that job, how can I choose a winner? But everyone is a winner when there are LEGO cookies for a treat afterwards.

Send in some pictures of your young engineer’s creations in your own easy to make LEGO cookies and LEGO competition!!