Dan & Day's smash burger with grass-fed beef, melted cheese, mushrooms and house sauce
76Smash
Score
Smash Score👍 Solid Smash
Solid Smash Est. 2024

Dan & Day's Burgers & Shakes

Wagyu Smash Burger
Upper Montclair, Montclair, NJ · 5 sources scored · Confidence: Medium ·Updated September 2026

Upper Montclair's grass-fed smash spot, ranked #15 in all of New Jersey by NJ.com. Wagyu smash, bacon jam, and locally sourced everything.

Smashburger Upper Montclair Full-Service Restaurant
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Smash Score
76 SMASH
SCORE
👍 Solid Smash
5 Sources
Scored Inputs
Medium
Confidence
Last calculated September 2026
Algorithm v1.1
The Story

Montclair's Solid Smash
A standout built on the smash.

Dan & Day's Burgers & Shakes opened in 2024 in Upper Montclair as the evolution of Stuffed Grassfed Burgers - same owner couple (Dan and Day), same commitment to quality beef, new address and expanded menu. The rebrand added wagyu smash burgers and sandwiches from the beloved late Watchung Deli, pairing the original grass-fed ethos with the high-sear smash technique. NJ.com ranked them #15 of 51 best burgers in New Jersey just two years in.

The beef is 100% grass-fed, grass-finished, hormone-free, and pasture-raised - a differentiated sourcing story that shows up in flavor. The Wagyu Smash adds another tier: premium wagyu beef smashed hard on the griddle for maximum crust and fat render. The Bacon Jam Burger, NJ.com's pick, layers sweet-smoky in-house bacon jam over a grass-fed patty in a way that rewards repeat visits. Even the buns are sourced locally.

Score Breakdown

How the 76 Was Calculated

Critics 35% weight
80
Crowd 45% weight
82
Community 10% weight
63
Accolades 10% weight
0
RAW WEIGHTED AVG
75.05
COMPETITION BONUS
+0
SOURCES SCORED
5
Final score formula: 75.05 raw weighted average + +0.75 qualitative boost + +0 competition bonus = 76.
The Burger

Wagyu Smash Burger

🥩
Build
Wagyu beef smash patty with melted cheese and fresh toppings
🧀
Cheese
Not specified
🍞
Bun
Not specified
🥕
Toppings & Sauce
House toppings and sauce
💵
Price
Price varies
💡
Neighborhood
Upper Montclair
🔥
Operation
Full-Service Restaurant
🍔
Established
2024
The Wagyu Smash is the signature smash item. NJ.com's #15 pick featured the Bacon Jam Burger (a distinct menu item); both are highly regarded. The cronut smash double - American cheese and sautéed onions on a toasted glazed cronut - is the staff-recommended specialty.
Locations

Find Dan & Day's Burgers & Shakes

⭐ Upper Montclair
Dan & Day's Burgers & Shakes
598 Valley Rd, Upper Montclair, NJ 07043
973-893-5805
Mon11am-8:30pm
Tue11am-8:30pm
Wed11am-8:30pm
Thu11am-8:30pm
Fri11am-9:30pm
Sat11am-9:30pm
Sun11am-8:30pm
What Critics & Diners Say

Review Excerpts

"

But you still can't go wrong with the bacon jam burger, which takes the concept of a bacon cheeseburger and makes it even better with a sweet, smokey bacon jam topping.

NJ.com
"

One of my favorite burger spots in the area! They still offer the Bacon Jam from their old establishment on their Bacon Jam burger.

TripAdvisor · 3.5/5
"

The Wagyu Smash burger quickly became my favorite.

Community review (via search aggregate)
"

quite dry with a grainy texture

Bill Cianci's Burger Reviews
"

The burger was not hot, just warm. Burger didn't even have great flavor.

TripAdvisor
Accolades & List Inclusions

The Record

📋
#15 of 51 Best Burgers in New Jersey - 2026
2026 - Featured item: Bacon Jam Burger. Article notes the 2024 rebrand from Stuffed Grassfed Burgers and expanded wagyu smash menu.
📋
FEAST Restaurant Directory
2025 - Included in Montclair Local's curated FEAST restaurant guide. Listed December 9, 2025.
Our Assessment

Strengths & Caveats

✓ Strengths
✓NJ.com named #15 of 51 Best Burgers in NJ (2026) - top-third ranking on the definitive statewide list
✓100% grass-fed, grass-finished beef with no hormones or antibiotics - rare premium sourcing in the smash burger category
✓Wagyu Smash Burger adds another premium tier above the standard grass-fed build
✓Strong Yelp presence: 4.7/5 across 82 reviews
✓Community brand with Farmhouse Fried Chicken and a nonprofit music festival (Uptown Sound Fest) - deep local roots
✓Milkshakes made with gelato from a local gelato shop; rolls from a local bakery - supply chain details that signal quality
✓Bacon Jam Burger carries forward the beloved signature from the predecessor Stuffed Grassfed Burgers - continuity of a fan favorite
⚠ Caveats
✗Bill Cianci's Nov 2024 blog review rated the Original Burger negatively (dry, grainy texture) - though he acknowledged ordering the wrong item
✗TripAdvisor only has 2 reviews with a mixed 3.5/5 average - low signal but genuine split in experience
✗Wagyu Smash price not publicly confirmed - higher-end positioning may limit accessibility
✗Google Maps rating not independently confirmed during research
✗Yelp reviews may partially reflect the predecessor Stuffed Grassfed Burgers (pre-2024 rebrand) rather than purely Dan & Day's experience