Step 3
Wipe out the saucepan, then add oil and heat over medium heat. Add onion; cook, stirring frequently, until transparent and starting to brown, 5 to 6 minutes. Add mushrooms; cook, stirring, until the mushrooms are softened and very little moisture is left in the pan, 3 to 4 minutes. Add garlic and sauce. Stir until hot. Remove from heat.