Loyal shoppers at Costco Wholesale know that the difference between a $90 cart and a $60 cart often comes down to whether or not you took thirty seconds to clip the right coupon. This week, Costco Wholesale (HQ: Issaquah, WA, roughly 600 US locations) is running a 33% off promotion on Stouffer's Lasagna as part of its frozen foods program. The offer is published as a printable coupon valid through 2026-05-25.
Stouffer's Lasagna is one of the more frequently restocked items in the frozen foods aisle, which is why Costco Wholesale has chosen it as a featured promotion: shoppers who buy it once tend to buy it again on the same trip the following week. The 33% discount in this campaign is meaningful because it lands above the typical 8–12% promotional band most chains run on their everyday staples. There is no minimum purchase requirement on this offer. Use promo code MARKETSTOU92 at checkout — the code is case-insensitive and works at the register, in the mobile app, and on most curbside pickup orders.
Print the coupon, hand it to your cashier with the qualifying item, and ask them to scan the barcode before they total your order. If you shop in person, double-check the printed receipt before leaving the store; on rare occasions a printable coupon will fail to scan because of an outdated SKU at a single location, and the customer service desk can apply the discount manually within minutes.
Consider buying two or three of the qualifying item if it stores well and your household actually uses it. Many Costco Wholesale shoppers report saving an additional 8–20% on top of the headline discount by combining this coupon with their loyalty program's earned points or fuel rewards. Because Stouffer's Lasagna is shelf-stable for at least a few weeks at typical pantry conditions, this is also a reasonable item to stock up on while the discount is live — just be honest about how much your household actually uses week to week.
Fine print: Offer not valid for resale. Cashier may verify loyalty membership at the point of sale. Pricing and availability of the underlying Stouffer's Lasagna item may vary by region; the published 33% discount applies to the in-store shelf price at participating Costco Wholesale locations and may differ slightly at express or fuel-station storefronts. Source: Coupon Aisle editorial sample.