These frosted lemon cake mix cookies are perfect when you want something cute and homemade without a big baking project. They bake up soft and fluffy with bright lemon flavor, and the vanilla buttercream on top makes them feel extra special. They’re great for spring parties, brunch, bake sales, or anytime you need an easy spring dessert that looks like it came from a bakery.
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Ingredients for Frosted Lemon Cake Mix Cookies
Lemon cake mix cookies
- 1 box lemon cake mix (15.25 oz)
- 2 large eggs
- 1/3 cup neutral oil (vegetable or canola)
- 2 tbsp lemon juice (fresh or bottled)
- 1 tsp lemon zest (optional, but adds a lot of lemon flavor)
Vanilla buttercream
- 1/2 cup (1 stick) unsalted butter, softened
- 2 cups powdered sugar
- 1–2 tbsp milk or heavy cream (for piping, use less; for spreading, use a bit more)
- 1 tsp vanilla extract
How to Make Frosted Lemon Cake Mix Cookies
1. Preheat your oven to 350°F. Line two baking sheets with parchment paper.
2. Juice and zest your lemon if you want to use fresh lemon
3. In a large bowl, mix together the lemon cake mix, eggs, oil, lemon juice, and (if using) lemon zest. Stir until a thick dough forms.
4. Chill the dough for 20–30 minutes so it’s easier to scoop and the cookies don’t spread as much.
5. Scoop the dough into 1 1/2-tablespoon portions, roll into smooth balls, and place them 2 inches apart on the baking sheets.
6. Bake for 8–10 minutes, until the edges are set and the centers look just barely done.
7. Beat the softened butter for 1–2 minutes until fluffy. Add the powdered sugar and vanilla then beat until combined (it’ll look thick at first).
8. Add milk or cream a little at a time and beat until smooth. For piping, keep it thicker; for spreading, add a tiny splash more.
9. Make sure the cookies are completely cool before frosting.
10. If you’re spreading the frosting, use a butter knife or small offset spatula to add a layer of vanilla buttercream on top of each cookie.
11. If you’re piping the frosting, scoop the buttercream into a piping bag. You can either snip the tip off the bag for a simple swirl, or use a plain round tip and pipe a swirl of frosting on top of each cookie.
12. Optional: Finish with a little lemon zest or sprinkles, then let the frosting set for 10–15 minutes before stacking or serving.
13. To store frosted cookies, let the frosting set for about 10–15 minutes first, then place them in an airtight container with parchment paper between layers so the frosting doesn’t smudge.
Pro Tips
- Chill the dough. Even 20–30 minutes helps the cookies stay thicker and bake up soft instead of spreading thin.
- Don’t overbake. Pull them when the edges look set and the centers still look a little underdone; they’ll finish setting as they cool.
- Use zest for the best lemon flavor. Lemon juice adds brightness, but lemon zest is what makes the lemon flavor really pop.
- Want the frosting to hold its shape longer? Let the cookies cool completely, then chill the frosted cookies for 10 minutes before serving or storing.
- Easy make-ahead win: Bake the cookies the day before, then frost the next day. This is one of those cake mix desserts that’s perfect when you want easy baked goods without the stress.
FAQs
How do you store frosted lemon cake mix cookies, and how long do they last?
Store frosted cookies in an airtight container with parchment paper between layers. They’ll keep well for about 3-4 days. If your kitchen runs warm, store them in the fridge so the buttercream stays set, then let them sit out for 10-15 minutes before serving.
What brand of cake mix should you use?
You can use any lemon cake mix you like, but I usually go with Duncan Hines. The biggest thing is checking the weight on the box. Most lemon cake mixes are around 15.25 oz, and using something very different can change the cookie texture.
Can you use bottled lemon juice, or does it need to be fresh?
Either works. Bottled lemon juice is totally fine for these cookies and keeps them super convenient. If you want the brightest, freshest flavor, use fresh lemon juice + lemon zest (the zest is the real flavor booster).
Can you freeze these cookies?
Yes! For best results, freeze the cookies unfrosted for up to 2 months. Thaw at room temperature, then frost before serving.
These frosted lemon cake mix cookies are one of those easy, reliable recipes you’ll want to keep in your back pocket. You get soft, lemony cookies with a simple vanilla buttercream on top, and they look so pretty for spring parties, brunch, and bake sales. If you’re putting together spring desserts ideas or just want a fun treat that doesn’t take a lot of time, this is such a sweet one to make.
Frosted Lemon Cake Mix Cookies
Ingredients
Lemon Cake Mix Cookies
- 1 box lemon cake mix 15.25 oz.
- 2 eggs
- 1/3 cup neutral oil
- 2 Tbsp lemon juice
- 1 tsp lemon zest optional, but adds more lemon flavor
Vanilla Buttercream Frosting
- 1/2 cup (1 stick) unsalted butter softened
- 2 cups powdered sugar
- 1-2 Tbsp milk or heavy cream adjust for texture
- 1 tsp vanilla
Instructions
- Juice and zest your lemon if you want to use fresh lemon
- In a large bowl, mix together the lemon cake mix, eggs, oil, lemon juice, and (if using) lemon zest. Stir until a thick dough forms.
- Chill the dough for 20–30 minutes so it’s easier to scoop and the cookies don’t spread as much.
- Preheat your oven to 350°F. Line two baking sheets with parchment paper.
- Scoop the dough into 1 1/2-tablespoon portions, roll into smooth balls, and place them 2 inches apart on the baking sheets.
- Bake for 8–10 minutes, until the edges are set and the centers look just barely done.
- Beat the softened butter for 1–2 minutes until fluffy. Add the powdered sugar and vanilla then beat until combined (it’ll look thick at first).
- Add milk or cream a little at a time and beat until smooth. For piping, keep it thicker; for spreading, add a tiny splash more.
- Make sure the cookies are completely cool before frosting.
- If you’re spreading the frosting, use a butter knife or small offset spatula to add a layer of vanilla buttercream on top of each cookie.
- If you’re piping the frosting, scoop the buttercream into a piping bag. You can either snip the tip off the bag for a simple swirl, or use a plain round tip and pipe a swirl of frosting on top of each cookie.
- Finish with a little lemon zest or sprinkles, then let the frosting set for 10–15 minutes before stacking or serving.
- To store frosted cookies, let the frosting set for about 10–15 minutes first, then place them in an airtight container with parchment paper between layers so the frosting doesn’t smudge.
