Golden, crunchy fried mushrooms coated in a garlicky Parmesan breadcrumb crust served with a simple cool ranch-style dip made from tartar sauce and fresh garlic. An easy, crowd-pleasing appetizer ready in under 30 minutes.
Combine the breadcrumbs, grated Parmesan, garlic powder, dried parsley, and a pinch of salt in a resealable bag or shallow bowl; shake or stir to mix evenly.
Whisk the egg in a large bowl. Add the mushrooms and toss until each mushroom is lightly coated with egg.
Working one at a time, place a mushroom into the breadcrumb mixture, seal the bag (or press into the crumbs) and shake until the mushroom is fully coated. Repeat until all mushrooms are breaded.
Heat oil in a deep fryer or a heavy saucepan to 375°F (190°C). Carefully add the breaded mushrooms in batches so they aren’t crowded and fry until they turn golden and crisp, about 4–6 minutes per batch.
Use a slotted spoon to transfer the fried mushrooms to a plate lined with paper towels to drain. Let them rest briefly so they crisp up.
For the Cool Ranch Dip:
Add the tartar sauce to a small bowl. Mash or finely grate the garlic cloves and stir them into the tartar sauce until smooth and evenly distributed.
Serve the hot fried mushrooms alongside the cool dip. Enjoy immediately for the best contrast of crisp mushroom and creamy sauce.