Skillet Beef and Mushroom Toasts with Baby Kale Salad

Ingredients

• 1 large onion, sliced
• 1 pound cremini mushrooms, sliced
• 1 pound lean ground beef
• 1 tablespoon soy sauce
• 1 tablespoon ketchup
• 2 teaspoon Dijon mustard
• 1 1/2 teaspoon garlic powder
• 1/2 teaspoon black pepper
• 1 tablespoon cooking oil
• 2 teaspoons red wine vinegar
• 1/2 teaspoon sugar
• 4 slices sandwich bread, toasted
• 2 stalks celery, diced
• 1 1/2 tablespoon red wine vinegar
• 2 teaspoon maple syrup
• 3 tablespoon extra virgin olive oil
• 4 ounces baby kale