This Caramelized Onion and Roasted Garlic Quick Bread is a classic one-bowl bake that transforms simple pantry staples into a dense, golden loaf. By skipping the yeast and using rich sour cream and softened butter, the recipe creates a tender loaf infused with deep, savory aromatics. It is a foolproof method for achieving old-world flavor and a rustic, seasoned crust in a fraction of the time.