Drain the sun-dried tomatoes into a 1 cup glass measuring cup.( I had about 1/3 cup.) Add enough olive oil to equal 1/2 cup of oil. Set aside.
Into a food processor, add in layers, the sun-dried tomatoes, pine nuts, Parmigiano-Reggiano cheese, loosely packed basil leaves and minced garlic along with salt and pepper. Pulse until ingredients resemble a thick paste.
Slowly drizzle in the oil while continuing to pulse until it is well incorporated.
Add more olive oil if you want a smoother consistency.
Store in refrigerator when not being used.