http://pinterest.com/pin/262334747016420895/ and decided to give it a try. I adapted some of the ingredients and had to adapt the lasagna noodles to fit my crockpot. We don't all have these oblong ones. I simply broke the noodles in half or in quarters and layered them to fit the pot. I also purchased a small Portobello mushroom package and used half of that simply make small sliced pieces. The entire prep took about 15 minutes.
Here is a link to the original recipe. http://www.eatingwell.com/recipes/crockpot_lasagna.html I changed the recipe a bit, making it a little easier. I bought frozen spinach and zucchini. I partially cooked it in the microwave and drained the excess water. I had on hand minced garlic in a jar. I also could not find whole wheat lasagna noodles and replaced those with the original lasagna noodles.
The total cost of all the ingredients was $23, including a loaf of Italian Bread. I am sure this would feed at least 5 people and will make a great left over.