You can use the idea we had to do in marketing class in college and I have had clients do many times (marketing company).
In seven words or less, sum up your entire mission statement and give the client all of the information they need to know about your business. For example, for my marketing company, it was, "Comprehensive marketing plans for small business".
It is not an easy task, but it really helps you give a clear and concise glimpse into your business. With marketing today, that's really all you have to hook them, that glimpse.
So yo need the scratch, cupcakes, and budget, to be clear. Gourmet is also important because not all scratch is gourmet. But gourmet is not always within budget.
100% Scratch Cupcakes, from Budget to Gourmet
It may not be the best, but it has your concept covered.
Really think about it. This is not the time to be catchy unless it works. Pretend it is on your vehicle and people are only getting a few seconds to read it. In those moments they will decide if you are one of the millions of companies out there vying for their money, that they actually will consider.