In a skillet over medium heat, brown ground beef and onion. Drain fat if needed.
Add chili powder, cumin, salt, garlic powder, pepper (or replace with your favorite taco seasoning packet) and salsa. Simmer.
Preheat oven to 400 degrees, line a baking sheet with a non-stick liner, parchment paper or aluminum foil.
Assemble the chimichangas: Down the center of each flour tortilla add a 1⁄4 cup ground beef, sprinkle with both cheeses.
Roll each chimichanga: Fold the edge nearest you over the top of filling, then fold left and right sides in, then continue rolling up.
Place each chimichanga, fold side down on baking sheet.
Brush tops with melted butter or spray with avocado oil.
Bake at 400 for 15 minutes until golden brown.