Heat oil in a saucepan. Add the mushrooms, stir-fry for 4 minutes.
Add the garlic and cook for 1 minute, keep stirring. Remove from heat. Add the dressing and toss well.
Divide spinach and tomatoes between serving plates. Plate with the garlic mushrooms. Serve warm.
Replace spinach leaves with other salad leaves, such as pak choi.
Scatter over nuts and seeds such as toasted pumpkin seeds if desired.
