Rinse and drain ikan bilis. Use paper towels to pat dry.
Roast peanuts in a 350°F (180°C) oven for 12 to 15 minutes until lightly brown. Remove and set aside.
Heat a tablespoon of vegetable oil in a non-stick fry pan over medium heat. Place tempeh in a single layer and fry each side for about 4 minutes. Remove and set aside.
Add another tablespoon of vegetable oil. Fry ikan bilis for about 5 to 6 minutes until golden brown. Remove and set aside.
In the same pan, add the remaining tablespoon of vegetable oil. Cook chili paste for about a minute. Stir in brown sugar, vinegar, water, and salt. Add fried ikan bilis, roasted peanuts, and fried tempeh. Stir to get everything well mixed.