Clean the mushrooms with a damp paper towel and slice them into 1/4-inch thick pieces—this thickness is important because it allows them to brown deeply and develop rich flavor without becoming too delicate. Mince the garlic cloves finely so they distribute evenly throughout the soup. Having everything prepped before you start cooking ensures you can focus on achieving proper browning and won't miss the critical moment to add garlic.

Heat the olive oil in a large pot over medium-high heat. Add the sliced mushrooms, salt, and pepper, then let them cook undisturbed for 3-4 minutes to develop a golden crust on the first side. Stir and continue cooking for another 5-7 minutes until the mushrooms are deeply browned and have released their moisture—this browning is crucial for developing the rich, earthy umami base of the soup. I like to let the mushrooms get nearly caramelized because it transforms their flavor from mild to intensely savory.

Add the minced garlic to the browned mushrooms and cook for about 1 minute, stirring frequently, until fragrant but not browned. Immediately add the butter and flour, stirring constantly for 2 minutes to create a roux that will thicken the soup and coat the mushrooms evenly. This short cooking time for the roux prevents it from browning while allowing the flour to cook out its raw taste.

Gradually pour in the vegetable broth while stirring constantly to avoid lumps, then add the soy sauce and thyme. Bring the soup to a gentle simmer and cook for 5-10 minutes, stirring occasionally, until it reaches your desired thickness—the soup will continue to thicken slightly as it simmers. The soy sauce adds a deep savory umami note that makes the mushroom flavor pop without tasting salty or meaty.

Remove the pot from heat and stir in the cream, allowing it to fully incorporate into the warm soup. Taste the soup and adjust seasoning with additional salt and pepper as needed, then stir in the smoked paprika for a subtle smoky depth. I've found that finishing off the heat prevents the cream from breaking or curdling, and it keeps the soup silky rather than overly thick.

Ladle the creamy garlic mushroom soup into bowls and serve hot. For extra richness, drizzle with a bit more cream or top with fresh thyme and cracked black pepper.