I have used seed meals for fertilizer, but never made a 'recipe'. For my lawn I use soybean meal exclusively as it is high N. Alfalfa meal is NPK balanced to be ideal for most plants. Yes, there is more than NPK to consider, but in terms of mixing a recipe alfalfa meal is hard to beat for coming ready to use as a general purpose fert and soybean mean for a high N fert.

Horse manure tea, compost, grass clipping and all various types of mulch.
The recipe percentages of all that is, 1 part handy at the moment, and 2 parts sitting and watching it decompose.
To be truly organic with crop meals, I would have to grow and grind the soybeans myself.

Compost and other forms of organic matter are all your soil would need. Fertilizers should not be needed if the soil is built up into a good, healthy soil.

Kimmsr and I don't often disagree but I believe compost is not a fertilizer. Compost is a "stable" product, meaning that all the nutritional value is gone. The only protein, carbohydrates, vitamins, and minerals left in finished compost is stored in the bacteria and fungi that remain either alive or dormant in it. Thus compost is an excellent source of microbes but it is not a fertilizer. I can apply it to my lawn every day of the year and the grass will turn more and more yellow. True fertilizer turns it green again.

I also disagree with justaguy on NPK. With organic fertilizers NPK is meaningless. NPK is a concern for chemical fertilizers because they have nothing else in them. With organic program you must be concerned with protein, carbohydrates, vitamins, and minerals - in other words, food. Organic fertilizers are food for the microbes living in the soil. That is why the commercial branded organic fertilizers contain alfalfa, corn, maize, cottonseed, seaweed, soy, flax, wheat, and sometimes animal byproducts. These are all food materials.

My secret formula for organic fertilizer is the following:
corn meal OR
alfalfa pellets

I don't mix anything. I use one or the other. I put 50 pounds of corn on my lawn on Monday in anticipation of not being home to do it on Thanksgiving Day. I used the whole bag because if I don't, then by February when I would apply again, it is full of bugs. I use it when it's buggy but there's an ICK factor that I don't care for.