In a large pot, melt the butter with avocado oil over low heat. Add onion, dried basil, dried oregano, garlic powder, and onion powder. Sauté for about 5 minutes. Then, stir in the fresh garlic.
½ cup small diced sweet onion, 2 tbsp avocado oil, 2 tbsp butter, 1 tsp dried basil, 1 tsp dried oregano, ¼ tsp garlic powder, ¼ tsp onion powder, 3 cloves fresh garlic
Stir in the tomato pesto and tomato paste. Cook on low for 2-3 minutes, stirring so as to not let the garlic burn.
1 tbsp sun-dried tomato pesto, 2 tbsp tomato paste
Add the diced sun-dried tomatoes and roasted red peppers. Stir and cook for another 3-4 minutes.
½ cup finely diced sun-dried tomatoes, ½ cup diced roasted red peppers
Add the chicken broth, sugar, and ground red chili flakes. Stir and let simmer for another 3-4 minutes. At this point, taste the sauce and add more chili flakes if you want a spicier sauce. ½ tsp white granulated sugar, 2 pinches ground red chili flakes, 1½ cup low-sodium chicken broth
Stir in the heavy cream and Parmesan cheese until smooth and creamy.
1½ cups heavy cream, ½ cup Parmesan cheese