I have a garden full of basil, so I've been making this a lot. Each serving has 461 calories and 18.9 g of protein. One serving costs $1.34 (assuming you are buying the basil and not growing your own).
Ingredients (makes 4 servings)
Boil the pasta.
While the pasta cooks, make the pesto. First, grind the pumpkin seeds in a food processor. Rinse the basil if needed. Next, add all of the remaining pesto ingredients and blend until very smooth.
Drain the cooked pasta, and stir in the beans and the pesto.