To make the garlic parmesan cream sauce, melt butter in the skillet over medium heat. Add garlic, and cook, stirring frequently, until fragrant, about 1-2 minutes. Whisk in flour until lightly browned, about 1 minute. Gradually whisk in chicken broth, thyme and basil. Cook, whisking constantly, until incorporated, about 1-2 minutes. Stir in half and half and Parmesan until slightly thickened, about 1-2 minutes. If the mixture is too thick, add more milk as needed; season with salt and pepper, to taste.