Welcome to Fully Baked, our Sunday newsletter where we validate one of our startup ideas as often as AI panic hits a top tech exec 😬
In today's edition:
💡 Why the best protein bar might be the one you make yourself
🔬 We ran a fake door test on this idea - here's what we found
🚀 The go-to-market playbook for this product
🤑 What the unit economics look like
⚔️ How the competitive landscape looks
❓ Our verdict: is this a go or no-go idea?
Let's goooo 🚀
💪 Protein Bar Mixes
Raise the Bar
Name.com domain: Barbake.com
👤 Source: We shared this idea back in edition #290, inspired by Betty Crocker of all people. It's sat in the vault for 20 months, and with protein now in everything from coffee to cereal, we thought it was time to stop talking about it and actually test it.
❌ Problem:
Everyone seems to be completely obsessed with protein. 71% of Americans are now actively trying to eat more of it, and the protein bar has become the default way to do it. Gym bros, desk workers and school-run parents all reaching for the same wrapper.
But a ready-made bar is a strange thing to pay for. You're paying a premium to have a factory mix powder with nut butter, wrap it in plastic and truck it across the country, where it sits on a shelf for months held together by ingredients you can't pronounce. The mixing is the easy bit. Here's the idea.
✅ Solution:
Launch a protein bar mix brand that looks premium but prices like a staple: the Betty Crocker box, rebuilt for the RXBAR generation.
Each 400g box holds the dry base. You add nut butter and milk, mix for two minutes, bake for 18 and cut eight bars with around 20g of protein each. About ten minutes of actual effort.
Sell it direct in multi-box bundles and subscriptions, then expand into more flavours and eventually the grocery aisle next to the cake mixes.
🧑💻 Prototyping: BarBake test site
🔎 Your Mum Loves Your Idea. Now Test It.
Before you build, work out what needs proving. Describe your idea to Hostinger Agent’s Business Advisor and ask: “Which customer assumptions should I test first?”
Then use that advice to brief Agent on your audience and offer, and build a website through its AI Builder connection. Preview it, refine the message and get ready to put it in front of potential customers.
🔬 Our Validation Process
🖥️ Desktop Research
71% of Americans say they're trying to eat more protein, up from 59% in 2022. This isn't a gym niche any more. It's the most sought-after nutrient in the country.
Making your own bars isn't a new idea. Creation Nation has sold no-bake protein bar mixes since 2014, pitching them at around $1.25 a bar against $2 for an RXBAR. Twelve years on, it's still a niche brand. That's a pretty important finding: cheaper alone hasn't been enough to make this category take off.
The protein itself is getting expensive. 80% whey protein concentrate hit a record price in May, more than double what it cost a year earlier. A mix still contains the protein, so this squeezes us too. The saving a mix offers comes from manufacturing, packaging and shipping, not the ingredients.
📣 The Fake Door Test
Rather than survey people about whether they'd buy a protein bar mix, we pretended to sell the finished product in what’s called a “fake door test”.
We built the BarBake site on Lovable in about an hour. One flavour (chocolate chip), one price ($8.50 a box, or $1.06 a bar before the ingredients you add at home, against $2.80 for shop-bought, though we'd charge more at launch, more on that below) and an "Express interest" button that asks for an email.
We made one ad with ChatGPT images. No photoshoot, no designer, no variations, no A/B testing. Just the single ad above, run from a brand-new Facebook page with zero followers.
We spent $26 on it. That's it.
The result: 2 signups. That works out at $13 per signup.
On paper, 2 signups for $26 might not sound like much. But think about what each of those people actually did. They saw an ad from a Facebook page with no followers, clicked through to a site nobody has ever heard of, for a brand that didn't exist a week ago, and handed a stranger their email address just to say "I'm interested". That’s an encouraging first signal. The next test is whether those people will actually pay.
🚀 Acquiring Users
👥 Early Customers
Start with the waitlist. Email everyone who signed up with a founding-member preorder for the 4-pack, shipping in six weeks. Whoever pays becomes your first cohort and your first source of reviews.
Then go where people already make their own snacks. Meal-prep communities on Reddit and TikTok, CrossFit boxes and run clubs. Send free boxes to small fitness and meal-prep creators and ask for one thing: film the prep and bake.
📈 Scaling Acquisition
The product is its own content. A tray of bars coming out of the oven is made for short-form video, and every customer can post their own twist on a flavour. Build the loop around user recipes and reshare the best.
Once the subscription is working, take it to retail. Mixes are shelf-stable and light, which makes them an easier first stocking conversation than chilled bars, starting with natural grocers.
🤑 The Economics of This Business
🏷️ Pricing
One box: $11.99. Eight bars at $1.50 each before the ingredients you add at home, compared with around $2.80 for a shop-bought bar. We priced a box at $8.50 on our test site, and that's too low - once a single box is shipped, it loses about $2. Hence the price needs to be a little higher.
The 4-pack: $44, free shipping. $11 a box, or $1.38 a bar before the ingredients you add at home. The default first order and the founding-member preorder.
🧮 Unit Economics
What one box costs to make (illustrative): about $5.00. Protein is the big line item: at May's record whey concentrate price (around $30 a kilo), the 160g or so a box needs would cost nearly $4.90 on its own. A whey and plant protein blend bought at volume gets that to roughly $3.20, plus $0.60 for oats, cocoa and chips, $0.70 for co-packing and $0.50 for the box.
A single box: $11.99 revenue, $5.00 to make, about $5.00 to ship, $0.65 in fees. That leaves $1.34, or 11%. It breaks even, but singles are a trial product, not the business.
The 4-pack: $44 revenue, $20 to make, $7.50 to ship (one parcel), $1.58 in fees. That leaves $14.92 contribution, or 34%.
Target CAC: Below $14.92 per paying customer to cover acquisition from the first 4-pack order, before fixed costs.
The key here is to be profitable on your first order. Repeat orders avoid the initial acquisition cost, which improves the economics.
⚔️ The Competitive Landscape
🏷️ Primary Competitors
Creation Nation (founded 2014, $14.99 a pouch): No-bake mixes making eight to twelve bars, sold online and through Thrive Market. Proved the product works, but a sports-nutritionist brand with playful flavour names never became a cult brand.
Making them from scratch (using ingredients you already have): Thousands of free recipes, a tub of protein powder and some oats. This is the real market leader. You beat it on taste, consistency and not having to measure seven ingredients on a Sunday night.
🎯 The Gap
Nobody pairs a great brand with a great price in this category. The bar aisle has RXBAR and Barebells; the mix aisle has nothing with that kind of brand. A clean-label, design-led mix that sells for under $1.50 a bar before the ingredients you add at home, positioned as the smarter way to eat protein rather than the budget one, is an open lane.
✅ Go
This idea is worth a go in our view.
A site built in an afternoon, one AI-generated ad and $26 of spend got 2 people to join a waitlist for a product that doesn't exist yet. Add a market where 71% of Americans are chasing protein, and the demand side is looking pretty good.
The unit economics look good and if you can eventually break into retail you could have an incredible business on your hands.
It’s time to raise the bar.
👋 That's All Folks
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