Preheat oven to 400 degrees and line a baking sheet with parchment paper. Lightly spray with olive oil and set aside.
Heat a cast iron skillet over medium heat and add a small amount of water or olive oil. Add in onion and garlic and sauté for 2-3 minutes until fragrant.
Add in mushrooms, carrots, and jalapeño and sauté for another 3-4 minutes.
Transfer cooked veggies to a food processor and add in remaining ingredients. Pulse until well combined, but not pureed. It is important to NOT over mix as you do not want a wet mushy mess. It is ideal to still have some chunkiness to your mixture! If it is a little too wet, add additional oats 1 TBSP at a time.
Form patties (6) by rolling into balls and flattening between your palms. Place on the parchment lined baking sheet.
Bake for 20 minutes. Flip and bake for an additional 10 minutes.
Add all ingredients for chutney to a blender and puree until smooth. Season to taste.