Udon Noodles with Tofu and Green Beans

Ingredients

• 1/2 cup (125 ml) water
• 1/4 cup (60 ml) ketchup
• 1/4 cup (60 ml) low-sodium soy sauce
• 2 tbsp (30 ml) peanut butter
• 1 tbsp brown sugar
• 1 tsp (5 ml) sambal oelek, or more to taste
• 1 lb (450 g) firm tofu, crumbled
• 3 tbsp (45 ml) vegetable oil
• 2 garlic cloves, finely chopped
• 1 tbsp fresh ginger, finely chopped
• 1/2 lb (225 g) green beans, trimmed
• packages (200 g each) fresh udon noodles
• 2 green onions, thinly sliced
• 1/4 cup (40 g) roasted peanuts, coarsely chopped (optional)