Preheat oven to 400 degrees. Chop and place veggies on a parchment paper lined baking sheet. Drizzle with olive oil & season with salt, pepper, garlic powder & onion powder. Bake for about 40 minutes or until veggies are tender.
While veggies are roasting, boil and cook pasta according to package instructions.
Once veggies are tender and cooked through, toss in a food processor or blender with the cottage cheese and blend until creamy.
In a large pot, melt butter over medium heat and whisk in the flour until golden brown and clumpy. Then, add the milk and stir until thick.
Add in veggie blend and shredded cheddar cheese. Mix until cheese sauce is smooth.
Add the cheese sauce to the pot of pasta and stir until pasta is fully coated. Serve immediately!