Creamy Roasted Red Pepper & Cauliflower Soup
4 Large Sweet Red Bell Peppers, Cored, Stemmed, Seeded, and Pressed Flat4 Tablespoons Olive Oil, Divided1 Small Onion, Chopped (About 3/4 Cup)2 Medium Garlic Cloves, Chopped (About 2 Teaspoons)1 Teaspoon Kosher Salt, Plus More to Taste1/2 Teaspoon Ground Black Pepper,...