#OREOShamROCKout
Influencer MarketingHireInfluence paired three lifestyle and foodie influencers with the limited-time OREO Shamrock McFlurry on Instagram, reporting 1.7M impressions at a $0.06 cost per engagement.
About the campaign
The OREO Shamrock McFlurry was only on McDonald's menus for a limited time in March, leaving a short window to build excitement for the co-branded dessert. HireInfluence's read was that a first-taste reaction is a naturally entertaining, repeatable moment, and the product's limited availability gave creators a credible urgency hook: a treat you either try in March or miss entirely.
Under #OREOShamROCKout, three top-tier lifestyle and foodie influencers posted Instagram videos and Reels of buying the McFlurry at their nearest McDonald's, then reacting with dance moves, outfit changes and scenery changes while talking up the limited availability and the OREO and McDonald's partnership. Filming the full purchase journey, from ordering to first taste, modelled the exact behaviour the campaign wanted viewers to copy.
A small, well-matched roster kept the creative device consistent and delivered a low reported cost per engagement, while narrating the co-brand tie-up turned it into content rather than a logo lockup. Content ran on Instagram, and HireInfluence reports 1.7M impressions, 298K engagements and a $0.06 cost per engagement. Ad Age Creativity and Vendry republished the campaign but reproduced the agency's own copy; no sales or engagement-rate data is published, and the sources do not state which year the March campaign ran.
Case in 60 seconds
The OREO Shamrock McFlurry was only on McDonald's menus for a limited time in March, leaving a short window to build excitement and awareness for the co-branded dessert.
A first-taste reaction is a naturally entertaining, repeatable moment, and the product's limited availability gives creators a credible urgency hook to talk about.
#OREOShamROCKout: influencers share how they 'rock out' the instant they taste the spring-fresh OREO Shamrock McFlurry.
Three top-tier lifestyle and foodie influencers posted Instagram videos and Reels of buying the McFlurry at their nearest McDonald's, then reacting with dance moves, outfit changes and scenery changes, while talking up the limited availability and the OREO x McDonald's partnership.
The agency reports 1.7M impressions, 298K engagements and a $0.06 cost per engagement. Figures are self-reported and republished by Ad Age Creativity and Vendry without independent verification.
Strategy Breakdown
The primary strategy-learning section — interpretation, not a press-release summary.
Creative & Execution System
Assets & channels
- Instagram videos and Reels
- #OREOShamROCKout hashtag
- Campaign sizzle reel on the agency site
Partners
- McDonald's
- OREO
- HireInfluence
Participation mechanic
- Creators filmed the purchase journey and taste reaction, inviting audiences to try the McFlurry during its limited March window
Creator role
- Three top-tier lifestyle and foodie influencers created and published the campaign content on their own Instagram accounts
Results & Evidence
| Metric | Value | Result type | Confidence |
|---|---|---|---|
| Impressions | 1.7M | reach | Agency reported |
| Engagements | 298K | engagement | Agency reported |
| Cost per engagement | $0.06 | efficiency | Agency reported |
Why HireInfluence's strategy worked
- 1
A small roster of three well-matched creators kept the creative device consistent and delivered a low reported cost per engagement.
- 2
A limited-time product gives creators a credible urgency hook; the March-only window was written into the content itself.
- 3
Filming the full purchase journey, from ordering to first taste, models the behaviour the campaign wants viewers to repeat.
- 4
Narrating the co-brand partnership explicitly turned the OREO x McDonald's tie-up into content rather than a logo lockup.
Results
51.7M+
Total views
2.9M+
Interactions
17.7%
Engagement rate
Results
10M+
Views
5M+
Impressions
20K+
New followers