Heat canola oil, sesame oil, red wine vinegar, Dijon mustard, honey, and salt in a skillet; bring to a boil. Pour hot dressing over spinach. Toss immediately to coat all the leaves with hot dressing. wilting the spinach.
Cook and stir onion in the same skillet; coat onion with any remaining dressing in the skillet.
Divide wilted spinach among 4 plates; sprinkle each with hard-boiled egg, onion, and toasted almonds. Season with black pepper.