Rinse the lentils. Place all ingredients in a pressure cooker. Cover and seal and cook on high pressure for 12 minutes. Let it naturally release for 10 minutes, then quick release.
1 lb bag of dry green or brown lentils, ¾ cup ketchup, 16 ounces diced tomatoes, 4 tablespoons mustard, 2 teaspoon garlic powder, 1 teaspoon onion powder, 1 tablespoon cumin, 2 tablespoons brown sugar, ½ teaspoon salt, 3 cups vegetable broth, 1 tablespoon soy sauce