Quick One Pot Mushroom Tetrazzini

With Sweet Baby Peas

A one pot wonder? Or a one pot miracle?

The flavor of this one pot mushroom tetrazzini makes me feel all warm and cozy inside. It is the most comforting dish I can possibly imagine, perfect for all the cold winter days. All I could think of was a big bowl of this amazing one pot meal! It is so damn delicious, I could not stop eating it.

Easy peasy, emphasis on the peas.

One Pot Mushroom Tetrazzini

Nicole Kearsley
Any recipe that can be made in one pot is a recipe for me. This one is so simple as the pasta cooks right in the pot right along with the other ingredients. 
5 from 1 vote
Prep Time 5 mins
Cook Time 20 mins
Total Time 25 mins
Course Main Course
Cuisine Italian, Vegan
Servings 4 Servings


  • 2 cloves Garlic Minced
  • 1/4 cup Vegan Butter
  • 1/4 cup Flour
  • 3 cups Vegetable Broth
  • 1 cup Plant Milk
  • 9 ounces Spaghetti
  • 1 cup Frozen Peas
  • 1/2 cup Panko Crumbs
  • 2 tablespoons Nutritional Yeast
  • 1 bunch Parsley Chopped


  • Preheat oven 450 °F (233 °C).
  • Using an oven proof pot, saute mushrooms and garlic in 1 tbsp olive oil, approximately 5 minutes. Season with salt and pepper. Set aside.
  • In the same pot, melt butter. Add flour to create a roux, cook for 1-2 minutes. Slowly add vegetable broth and plant milk, stirring to blend, bring to a boil.
  • Break spaghetti in half, add to the pot, then bring to a boil. Cook 5 minutes stirring frequently to keep pasta from sticking.
  • Add mushrooms and peas. Bring back to boil, cook 2 minutes longer.
  • Remove from heat. Combine nutritional yeast and Panko bread crumbs. Sprinkle over top of casserole. Dab top of the top of casserole with slivers of butter.
  • Bake for 10 to 12 minutes uncovered. Stir before serving. Sprinkle with chopped parsley (optional).


MAKE IT GLUTEN-FREE: It’s easy to make gluten-free, just use some gluten free all purpose flour to make the roux, and use your favorite gluten free pasta!
MAKE AHEAD: Prepare as directed, but don’t bake, then cover and refrigerate overnight.  While the oven is preheating, let the pot sit out on the counter at room temperature, then bake according to the recipe.
*PANKO CRUMBS: If you want more super crispy panko bread crumbs for the top, you can just add them to a pan with some olive oil and brown them.
Keyword plant based, vegan
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